404509967 has 2 divisors, whose sum is σ = 404509968. Its totient is φ = 404509966.

The previous prime is 404509961. The next prime is 404509991. The reversal of 404509967 is 769905404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404509967 - 2⁸ = 404509711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404509961) 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, 202254983 + 202254984.

It is an arithmetic number, because the mean of its divisors is an integer number (202254984).

Almost surely, 2^404509967 is an apocalyptic number.

404509967 is a deficient number, since it is larger than the sum of its proper divisors (1).

404509967 is an equidigital number, since it uses as much as digits as its factorization.

404509967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 404509967 is about 20112.4331446993. The cubic root of 404509967 is about 739.5651005582.

The spelling of 404509967 in words is "four hundred four million, five hundred nine thousand, nine hundred sixty-seven".