390984924 has 24 divisors (see below), whose sum is σ = 995234688. Its totient is φ = 118480240.

The previous prime is 390984911. The next prime is 390984949. The reversal of 390984924 is 429489093.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1480872 + ... + 1481135.

It is an arithmetic number, because the mean of its divisors is an integer number (41468112).

Almost surely, 2^390984924 is an apocalyptic number.

It is an amenable number.

390984924 is an abundant number, since it is smaller than the sum of its proper divisors (604249764).

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

390984924 is a wasteful number, since it uses less digits than its factorization.

390984924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962025 (or 2962023 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 390984924 is about 19773.3387165648. The cubic root of 390984924 is about 731.2288827856.

The spelling of 390984924 in words is "three hundred ninety million, nine hundred eighty-four thousand, nine hundred twenty-four".