390925836 has 72 divisors (see below), whose sum is σ = 1188794880. Its totient is φ = 105813216.

The previous prime is 390925813. The next prime is 390925879. The reversal of 390925836 is 638529093.

390925836 is a `hidden beast` number, since 390 + 9 + 258 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 390925791 and 390925800.

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 23 ways as a sum of consecutive naturals, for example, 36036 + ... + 45611.

It is an arithmetic number, because the mean of its divisors is an integer number (16511040).

Almost surely, 2^390925836 is an apocalyptic number.

390925836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

390925836 is an abundant number, since it is smaller than the sum of its proper divisors (797869044).

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

390925836 is a wasteful number, since it uses less digits than its factorization.

390925836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81683 (or 81678 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 390925836 is about 19771.8445270035. The cubic root of 390925836 is about 731.1920450234.

The spelling of 390925836 in words is "three hundred ninety million, nine hundred twenty-five thousand, eight hundred thirty-six".