389808984 has 32 divisors (see below), whose sum is σ = 975075120. Its totient is φ = 129862656.

The previous prime is 389808967. The next prime is 389809009. The reversal of 389808984 is 489808983.

It is a super-2 number, since 2×389808984² = 303902088014224512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53632 + ... + 60464.

Almost surely, 2^389808984 is an apocalyptic number.

It is an amenable number.

389808984 is an abundant number, since it is smaller than the sum of its proper divisors (585266136).

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

389808984 is a wasteful number, since it uses less digits than its factorization.

389808984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219 (or 9215 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 57.

The square root of 389808984 is about 19743.5808302344. The cubic root of 389808984 is about 730.4950567029.

Subtracting 389808984 from its reverse (489808983), we obtain a palindrome (99999999).

The spelling of 389808984 in words is "three hundred eighty-nine million, eight hundred eight thousand, nine hundred eighty-four".