408492979 has 2 divisors, whose sum is σ = 408492980. Its totient is φ = 408492978.

The previous prime is 408492971. The next prime is 408493009. The reversal of 408492979 is 979294804.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 408492979 - 2³ = 408492971 is a prime.

It is not a weakly prime, because it can be changed into another prime (408492971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204246489 + 204246490.

It is an arithmetic number, because the mean of its divisors is an integer number (204246490).

Almost surely, 2^408492979 is an apocalyptic number.

408492979 is a deficient number, since it is larger than the sum of its proper divisors (1).

408492979 is an equidigital number, since it uses as much as digits as its factorization.

408492979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 408492979 is about 20211.2092414086. The cubic root of 408492979 is about 741.9845555158.

The spelling of 408492979 in words is "four hundred eight million, four hundred ninety-two thousand, nine hundred seventy-nine".