392240668 has 12 divisors (see below), whose sum is σ = 702384760. Its totient is φ = 191559312.

The previous prime is 392240623. The next prime is 392240683. The reversal of 392240668 is 866042293.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 392240668.

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, 1140063 + ... + 1140406.

Almost surely, 2^392240668 is an apocalyptic number.

It is an amenable number.

392240668 is a deficient number, since it is larger than the sum of its proper divisors (310144092).

392240668 is a wasteful number, since it uses less digits than its factorization.

392240668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280516 (or 2280514 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 392240668 is about 19805.0667254619. The cubic root of 392240668 is about 732.0108864974.

The spelling of 392240668 in words is "three hundred ninety-two million, two hundred forty thousand, six hundred sixty-eight".