390812793 has 8 divisors (see below), whose sum is σ = 595524288. Its totient is φ = 223321584.

The previous prime is 390812791. The next prime is 390812837. The reversal of 390812793 is 397218093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 390812793 - 2¹ = 390812791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390812791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9305046 + ... + 9305087.

It is an arithmetic number, because the mean of its divisors is an integer number (74440536).

Almost surely, 2^390812793 is an apocalyptic number.

It is an amenable number.

390812793 is a deficient number, since it is larger than the sum of its proper divisors (204711495).

390812793 is a wasteful number, since it uses less digits than its factorization.

390812793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18610143.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 390812793 is about 19768.9856340683. The cubic root of 390812793 is about 731.1215592661.

The spelling of 390812793 in words is "three hundred ninety million, eight hundred twelve thousand, seven hundred ninety-three".