390970 has 8 divisors (see below), whose sum is σ = 703764. Its totient is φ = 156384.

The previous prime is 390967. The next prime is 390989. The reversal of 390970 is 79093.

It can be written as a sum of positive squares in 2 ways, for example, as 385641 + 5329 = 621^2 + 73^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19539 + ... + 19558.

2³⁹⁰⁹⁷⁰ is an apocalyptic number.

390970 is a deficient number, since it is larger than the sum of its proper divisors (312794).

390970 is a wasteful number, since it uses less digits than its factorization.

390970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39104.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 390970 is about 625.2759390861. The cubic root of 390970 is about 73.1219578933.

The spelling of 390970 in words is "three hundred ninety thousand, nine hundred seventy".