390974 has 8 divisors (see below), whose sum is σ = 589680. Its totient is φ = 194416.

The previous prime is 390967. The next prime is 390989. The reversal of 390974 is 479093.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 390974.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390974.

It is an unprimeable number.

390974 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47 + ... + 885.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2³⁹⁰⁹⁷⁴ is an apocalyptic number.

390974 is a deficient number, since it is larger than the sum of its proper divisors (198706).

390974 is a wasteful number, since it uses less digits than its factorization.

390974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 390974 is about 625.2791376657. The cubic root of 390974 is about 73.1222072618.

The spelling of 390974 in words is "three hundred ninety thousand, nine hundred seventy-four".