390397379 has 4 divisors (see below), whose sum is σ = 390948720. Its totient is φ = 389846040.

The previous prime is 390397373. The next prime is 390397393. The reversal of 390397379 is 973793093.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 390397379 - 2²⁰ = 389348803 is a prime.

It is a super-2 number, since 2×390397379² = 304820227060139282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390397373) by changing a digit.

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, 274607 + ... + 276024.

It is an arithmetic number, because the mean of its divisors is an integer number (97737180).

Almost surely, 2^390397379 is an apocalyptic number.

390397379 is a deficient number, since it is larger than the sum of its proper divisors (551341).

390397379 is an equidigital number, since it uses as much as digits as its factorization.

390397379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551340.

The product of its (nonzero) digits is 964467, while the sum is 50.

The square root of 390397379 is about 19758.4761305117. The cubic root of 390397379 is about 730.8624191589.

The spelling of 390397379 in words is "three hundred ninety million, three hundred ninety-seven thousand, three hundred seventy-nine".