390974846 has 8 divisors (see below), whose sum is σ = 586819080. Its totient is φ = 195368488.

The previous prime is 390974833. The next prime is 390974849. The reversal of 390974846 is 648479093.

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

It is a super-2 number, since 2×390974846² = 305722660409447432, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 390974794 and 390974803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390974849) 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 3 ways as a sum of consecutive naturals, for example, 55301 + ... + 61968.

It is an arithmetic number, because the mean of its divisors is an integer number (73352385).

Almost surely, 2^390974846 is an apocalyptic number.

390974846 is a deficient number, since it is larger than the sum of its proper divisors (195844234).

390974846 is a wasteful number, since it uses less digits than its factorization.

390974846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118938.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 390974846 is about 19773.0838768261. The cubic root of 390974846 is about 731.2226000301. Note that the first 3 decimals are identical.

The spelling of 390974846 in words is "three hundred ninety million, nine hundred seventy-four thousand, eight hundred forty-six".