390647967 has 16 divisors (see below), whose sum is σ = 528858720. Its totient is φ = 256458752.

The previous prime is 390647953. The next prime is 390647993. The reversal of 390647967 is 769746093.

It is a cyclic number.

It is not a de Polignac number, because 390647967 - 2⁸ = 390647711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390647927) 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, 65773 + ... + 71465.

It is an arithmetic number, because the mean of its divisors is an integer number (33053670).

Almost surely, 2^390647967 is an apocalyptic number.

390647967 is a deficient number, since it is larger than the sum of its proper divisors (138210753).

390647967 is a wasteful number, since it uses less digits than its factorization.

390647967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042.

The product of its (nonzero) digits is 1714608, while the sum is 51.

The square root of 390647967 is about 19764.8163917604. The cubic root of 390647967 is about 731.0187608677.

The spelling of 390647967 in words is "three hundred ninety million, six hundred forty-seven thousand, nine hundred sixty-seven".