404434665 has 48 divisors (see below), whose sum is σ = 741936000. Its totient is φ = 203233536.

The previous prime is 404434661. The next prime is 404434687. The reversal of 404434665 is 566434404.

It is not a de Polignac number, because 404434665 - 2² = 404434661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404434661) 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, 168957 + ... + 171333.

It is an arithmetic number, because the mean of its divisors is an integer number (15457000).

Almost surely, 2^404434665 is an apocalyptic number.

404434665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

404434665 is a deficient number, since it is larger than the sum of its proper divisors (337501335).

404434665 is a wasteful number, since it uses less digits than its factorization.

404434665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2603 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The square root of 404434665 is about 20110.5610314581. The cubic root of 404434665 is about 739.5192061906.

The spelling of 404434665 in words is "four hundred four million, four hundred thirty-four thousand, six hundred sixty-five".