404469936500 has 72 divisors (see below), whose sum is σ = 1027584826632. Its totient is φ = 138675398400.

The previous prime is 404469936457. The next prime is 404469936569. The reversal of 404469936500 is 5639964404.

It can be written as a sum of positive squares in 4 ways, for example, as 98397651856 + 306072284644 = 313684^2 + 553238^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8229989 + ... + 8278988.

It is an arithmetic number, because the mean of its divisors is an integer number (14272011481).

Almost surely, 2^404469936500 is an apocalyptic number.

It is an amenable number.

404469936500 is an abundant number, since it is smaller than the sum of its proper divisors (623114890132).

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

404469936500 is a wasteful number, since it uses less digits than its factorization.

404469936500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16509010 (or 16508991 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 404469936500 in words is "four hundred four billion, four hundred sixty-nine million, nine hundred thirty-six thousand, five hundred".