404407667 has 2 divisors, whose sum is σ = 404407668. Its totient is φ = 404407666.

The previous prime is 404407657. The next prime is 404407687. The reversal of 404407667 is 766704404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404407667 - 2⁴ = 404407651 is a prime.

It is a super-2 number, since 2×404407667² = 327091122256765778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404407667.

It is not a weakly prime, because it can be changed into another prime (404407607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202203833 + 202203834.

It is an arithmetic number, because the mean of its divisors is an integer number (202203834).

Almost surely, 2^404407667 is an apocalyptic number.

404407667 is a deficient number, since it is larger than the sum of its proper divisors (1).

404407667 is an equidigital number, since it uses as much as digits as its factorization.

404407667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 404407667 is about 20109.8897809013. The cubic root of 404407667 is about 739.5027503116.

The spelling of 404407667 in words is "four hundred four million, four hundred seven thousand, six hundred sixty-seven".