390976761 has 16 divisors (see below), whose sum is σ = 630820224. Its totient is φ = 210273024.

The previous prime is 390976721. The next prime is 390976763. The reversal of 390976761 is 167679093.

It is not a de Polignac number, because 390976761 - 2¹⁸ = 390714617 is a prime.

It is a super-2 number, since 2×390976761² = 305725655284102242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 390976761.

It is not an unprimeable number, because it can be changed into a prime (390976763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547230 + ... + 547943.

It is an arithmetic number, because the mean of its divisors is an integer number (39426264).

Almost surely, 2^390976761 is an apocalyptic number.

It is an amenable number.

390976761 is a deficient number, since it is larger than the sum of its proper divisors (239843463).

390976761 is a wasteful number, since it uses less digits than its factorization.

390976761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095200.

The product of its (nonzero) digits is 428652, while the sum is 48.

The square root of 390976761 is about 19773.1323011808. The cubic root of 390976761 is about 731.2237938742.

The spelling of 390976761 in words is "three hundred ninety million, nine hundred seventy-six thousand, seven hundred sixty-one".