390247292 has 12 divisors (see below), whose sum is σ = 683080776. Its totient is φ = 195081360.

The previous prime is 390247271. The next prime is 390247303. The reversal of 390247292 is 292742093.

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, 20042 + ... + 34382.

It is an arithmetic number, because the mean of its divisors is an integer number (56923398).

Almost surely, 2^390247292 is an apocalyptic number.

It is an amenable number.

390247292 is a deficient number, since it is larger than the sum of its proper divisors (292833484).

390247292 is a wasteful number, since it uses less digits than its factorization.

390247292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21148 (or 21146 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 390247292 is about 19754.6777245289. The cubic root of 390247292 is about 730.7687479289.

The spelling of 390247292 in words is "three hundred ninety million, two hundred forty-seven thousand, two hundred ninety-two".