404564121 has 48 divisors (see below), whose sum is σ = 647337600. Its totient is φ = 241940736.

The previous prime is 404564117. The next prime is 404564137. The reversal of 404564121 is 121465404.

It is not a de Polignac number, because 404564121 - 2² = 404564117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404564101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 710725 + ... + 711293.

It is an arithmetic number, because the mean of its divisors is an integer number (13486200).

Almost surely, 2^404564121 is an apocalyptic number.

It is an amenable number.

404564121 is a deficient number, since it is larger than the sum of its proper divisors (242773479).

404564121 is a wasteful number, since it uses less digits than its factorization.

404564121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 404564121 is about 20113.7793813097. The cubic root of 404564121 is about 739.5981023172.

The spelling of 404564121 in words is "four hundred four million, five hundred sixty-four thousand, one hundred twenty-one".