404229979 has 2 divisors, whose sum is σ = 404229980. Its totient is φ = 404229978.

The previous prime is 404229953. The next prime is 404230007. The reversal of 404229979 is 979922404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404229979 - 2⁷ = 404229851 is a prime.

It is not a weakly prime, because it can be changed into another prime (404229929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202114989 + 202114990.

It is an arithmetic number, because the mean of its divisors is an integer number (202114990).

Almost surely, 2^404229979 is an apocalyptic number.

404229979 is a deficient number, since it is larger than the sum of its proper divisors (1).

404229979 is an equidigital number, since it uses as much as digits as its factorization.

404229979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 404229979 is about 20105.4713697541. The cubic root of 404229979 is about 739.3944272628.

The spelling of 404229979 in words is "four hundred four million, two hundred twenty-nine thousand, nine hundred seventy-nine".