389921536 has 18 divisors (see below), whose sum is σ = 778320452. Its totient is φ = 194960640.

The previous prime is 389921533. The next prime is 389921551. The reversal of 389921536 is 635129983.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (389921531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761310 + ... + 761821.

Almost surely, 2^389921536 is an apocalyptic number.

It is an amenable number.

389921536 is a deficient number, since it is larger than the sum of its proper divisors (388398916).

389921536 is an equidigital number, since it uses as much as digits as its factorization.

389921536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523147 (or 1523133 counting only the distinct ones).

The product of its digits is 349920, while the sum is 46.

The square root of 389921536 is about 19746.4309686586. The cubic root of 389921536 is about 730.5653567482.

The spelling of 389921536 in words is "three hundred eighty-nine million, nine hundred twenty-one thousand, five hundred thirty-six".