390996252 has 18 divisors (see below), whose sum is σ = 988351728. Its totient is φ = 130332072.

The previous prime is 390996239. The next prime is 390996257. The reversal of 390996252 is 252699093.

390996252 is a `hidden beast` number, since 390 + 9 + 9 + 6 + 252 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 390996198 and 390996207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390996257) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 5430468 + ... + 5430539.

Almost surely, 2^390996252 is an apocalyptic number.

It is an amenable number.

390996252 is an abundant number, since it is smaller than the sum of its proper divisors (597355476).

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

390996252 is a wasteful number, since it uses less digits than its factorization.

390996252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10861017 (or 10861012 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 390996252 is about 19773.6251608045. The cubic root of 390996252 is about 731.2359446783.

The spelling of 390996252 in words is "three hundred ninety million, nine hundred ninety-six thousand, two hundred fifty-two".