404496855 has 32 divisors (see below), whose sum is σ = 821836800. Its totient is φ = 184912416.

The previous prime is 404496853. The next prime is 404496877. The reversal of 404496855 is 558694404.

It is not a de Polignac number, because 404496855 - 2¹ = 404496853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 404496855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404496853) 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 in 31 ways as a sum of consecutive naturals, for example, 213075 + ... + 214964.

It is an arithmetic number, because the mean of its divisors is an integer number (25682400).

Almost surely, 2^404496855 is an apocalyptic number.

404496855 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

404496855 is an abundant number, since it is smaller than the sum of its proper divisors (417339945).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404496855 is a wasteful number, since it uses less digits than its factorization.

404496855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428060 (or 428054 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 404496855 is about 20112.1071745354. The cubic root of 404496855 is about 739.5571095871.

The spelling of 404496855 in words is "four hundred four million, four hundred ninety-six thousand, eight hundred fifty-five".