390380879 has 8 divisors (see below), whose sum is σ = 446899200. Its totient is φ = 334049976.

The previous prime is 390380873. The next prime is 390380891. The reversal of 390380879 is 978083093.

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

It is a cyclic number.

It is not a de Polignac number, because 390380879 - 2²⁴ = 373603663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390380873) 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 7 ways as a sum of consecutive naturals, for example, 42359 + ... + 50744.

It is an arithmetic number, because the mean of its divisors is an integer number (55862400).

Almost surely, 2^390380879 is an apocalyptic number.

390380879 is a deficient number, since it is larger than the sum of its proper divisors (56518321).

390380879 is an equidigital number, since it uses as much as digits as its factorization.

390380879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93709.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 390380879 is about 19758.0585837779. The cubic root of 390380879 is about 730.8521224710.

The spelling of 390380879 in words is "three hundred ninety million, three hundred eighty thousand, eight hundred seventy-nine".