390942479 has 2 divisors, whose sum is σ = 390942480. Its totient is φ = 390942478.

The previous prime is 390942467. The next prime is 390942493. The reversal of 390942479 is 974249093.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 390942479 - 2²⁴ = 374165263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390942439) 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 as a sum of consecutive naturals, namely, 195471239 + 195471240.

It is an arithmetic number, because the mean of its divisors is an integer number (195471240).

Almost surely, 2^390942479 is an apocalyptic number.

390942479 is a deficient number, since it is larger than the sum of its proper divisors (1).

390942479 is an equidigital number, since it uses as much as digits as its factorization.

390942479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 390942479 is about 19772.2653987852. The cubic root of 390942479 is about 731.2024212938.

The spelling of 390942479 in words is "three hundred ninety million, nine hundred forty-two thousand, four hundred seventy-nine".