390520697 has 16 divisors (see below), whose sum is σ = 460961280. Its totient is φ = 323904768.

The previous prime is 390520693. The next prime is 390520717. The reversal of 390520697 is 796025093.

It is a cyclic number.

It is not a de Polignac number, because 390520697 - 2² = 390520693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390520693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22613 + ... + 35949.

It is an arithmetic number, because the mean of its divisors is an integer number (28810080).

Almost surely, 2^390520697 is an apocalyptic number.

It is an amenable number.

390520697 is a deficient number, since it is larger than the sum of its proper divisors (70440583).

390520697 is a wasteful number, since it uses less digits than its factorization.

390520697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13480.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 390520697 is about 19761.5965195123. The cubic root of 390520697 is about 730.9393655460.

The spelling of 390520697 in words is "three hundred ninety million, five hundred twenty thousand, six hundred ninety-seven".