404007432885 has 160 divisors (see below), whose sum is σ = 874257702912. Its totient is φ = 174573221760.

The previous prime is 404007432847. The next prime is 404007432889. The reversal of 404007432885 is 588234700404.

It is a happy number.

It is not a de Polignac number, because 404007432885 - 2¹¹ = 404007430837 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 404007432885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404007432889) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 3725602 + ... + 3832508.

Almost surely, 2^404007432885 is an apocalyptic number.

404007432885 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

404007432885 is an abundant number, since it is smaller than the sum of its proper divisors (470250270027).

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

404007432885 is a wasteful number, since it uses less digits than its factorization.

404007432885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107005 (or 106996 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The spelling of 404007432885 in words is "four hundred four billion, seven million, four hundred thirty-two thousand, eight hundred eighty-five".