Change normal integer to hexadecimal

Hi would like to know how to change normal integer to hexadecimal when sending value to user

eg. value: ‘0x3B9ACA00’

const transactionHash = await ethereum.request({
method: ‘eth_sendTransaction’,
params: [{
to: ‘0xe554E286a9073A523C55333069920BC655746110’,
from: ‘0xe554E286a9073A523C55333069920BC655746110’,
value: ‘0x3B9ACA00’,
}, ],
});