389331992 has 16 divisors (see below), whose sum is σ = 834282960. Its totient is φ = 166856544.

The previous prime is 389331967. The next prime is 389332033. The reversal of 389331992 is 299133983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3476123 + ... + 3476234.

It is an arithmetic number, because the mean of its divisors is an integer number (52142685).

Almost surely, 2^389331992 is an apocalyptic number.

It is an amenable number.

389331992 is an abundant number, since it is smaller than the sum of its proper divisors (444950968).

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

389331992 is a wasteful number, since it uses less digits than its factorization.

389331992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952370 (or 6952366 counting only the distinct ones).

The product of its digits is 314928, while the sum is 47.

The square root of 389331992 is about 19731.4974596456. The cubic root of 389331992 is about 730.1969769316.

It can be divided in two parts, 3 and 89331992, that multiplied together give a triangular number (267995976 = T₂₃₁₅₁).

The spelling of 389331992 in words is "three hundred eighty-nine million, three hundred thirty-one thousand, nine hundred ninety-two".