408979 has 2 divisors, whose sum is σ = 408980. Its totient is φ = 408978.

The previous prime is 408971. The next prime is 408997. The reversal of 408979 is 979804.

It is a happy number.

Together with next prime (408997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 408979 - 2³ = 408971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (408971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204489 + 204490.

It is an arithmetic number, because the mean of its divisors is an integer number (204490).

2⁴⁰⁸⁹⁷⁹ is an apocalyptic number.

408979 is a deficient number, since it is larger than the sum of its proper divisors (1).

408979 is an equidigital number, since it uses as much as digits as its factorization.

408979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 408979 is about 639.5146597225. The cubic root of 408979 is about 74.2278707572.

The spelling of 408979 in words is "four hundred eight thousand, nine hundred seventy-nine".