390915572 has 12 divisors (see below), whose sum is σ = 695317476. Its totient is φ = 192253440.

The previous prime is 390915559. The next prime is 390915583. The reversal of 390915572 is 275519093.

It can be written as a sum of positive squares in 2 ways, for example, as 37625956 + 353289616 = 6134^2 + 18796^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800813 + ... + 801300.

It is an arithmetic number, because the mean of its divisors is an integer number (57943123).

Almost surely, 2^390915572 is an apocalyptic number.

It is an amenable number.

390915572 is a deficient number, since it is larger than the sum of its proper divisors (304401904).

390915572 is a wasteful number, since it uses less digits than its factorization.

390915572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602178 (or 1602176 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 390915572 is about 19771.5849642865. The cubic root of 390915572 is about 731.1856456674.

The spelling of 390915572 in words is "three hundred ninety million, nine hundred fifteen thousand, five hundred seventy-two".