389511492 has 12 divisors (see below), whose sum is σ = 908860176. Its totient is φ = 129837160.

The previous prime is 389511491. The next prime is 389511511. The reversal of 389511492 is 294115983.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (389511491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16229634 + ... + 16229657.

It is an arithmetic number, because the mean of its divisors is an integer number (75738348).

Almost surely, 2^389511492 is an apocalyptic number.

It is an amenable number.

389511492 is an abundant number, since it is smaller than the sum of its proper divisors (519348684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389511492 is a wasteful number, since it uses less digits than its factorization.

389511492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32459298 (or 32459296 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 389511492 is about 19736.0455005556. The cubic root of 389511492 is about 730.3091778484.

The spelling of 389511492 in words is "three hundred eighty-nine million, five hundred eleven thousand, four hundred ninety-two".