389002540 has 24 divisors (see below), whose sum is σ = 818364960. Its totient is φ = 155323008.

The previous prime is 389002531. The next prime is 389002573. The reversal of 389002540 is 45200983.

It is a super-2 number, since 2×389002540² = 302645952252903200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5712 + ... + 28471.

It is an arithmetic number, because the mean of its divisors is an integer number (34098540).

Almost surely, 2^389002540 is an apocalyptic number.

It is an amenable number.

389002540 is an abundant number, since it is smaller than the sum of its proper divisors (429362420).

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

389002540 is a wasteful number, since it uses less digits than its factorization.

389002540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34761 (or 34759 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 389002540 is about 19723.1473147670. The cubic root of 389002540 is about 729.9909550390.

The spelling of 389002540 in words is "three hundred eighty-nine million, two thousand, five hundred forty".