396090839 has 2 divisors, whose sum is σ = 396090840. Its totient is φ = 396090838.

The previous prime is 396090833. The next prime is 396090847. The reversal of 396090839 is 938090693.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396090839 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 396090793 and 396090802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396090833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198045419 + 198045420.

It is an arithmetic number, because the mean of its divisors is an integer number (198045420).

Almost surely, 2^396090839 is an apocalyptic number.

396090839 is a deficient number, since it is larger than the sum of its proper divisors (1).

396090839 is an equidigital number, since it uses as much as digits as its factorization.

396090839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 396090839 is about 19902.0310270083. The cubic root of 396090839 is about 734.3981924989.

The spelling of 396090839 in words is "three hundred ninety-six million, ninety thousand, eight hundred thirty-nine".