390579956 has 18 divisors (see below), whose sum is σ = 740138742. Its totient is φ = 180267360.

The previous prime is 390579907. The next prime is 390579961. The reversal of 390579956 is 659975093.

It can be written as a sum of positive squares in 3 ways, for example, as 3671056 + 386908900 = 1916^2 + 19670^2 .

It is a junction number, because it is equal to n+sod(n) for n = 390579898 and 390579907.

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 5 ways as a sum of consecutive naturals, for example, 288215 + ... + 289566.

It is an arithmetic number, because the mean of its divisors is an integer number (41118819).

Almost surely, 2^390579956 is an apocalyptic number.

It is an amenable number.

390579956 is a deficient number, since it is larger than the sum of its proper divisors (349558786).

390579956 is a wasteful number, since it uses less digits than its factorization.

390579956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577811 (or 577796 counting only the distinct ones).

The product of its (nonzero) digits is 2296350, while the sum is 53.

The square root of 390579956 is about 19763.0958101204. The cubic root of 390579956 is about 730.9763354561.

The spelling of 390579956 in words is "three hundred ninety million, five hundred seventy-nine thousand, nine hundred fifty-six".