404480844 has 24 divisors (see below), whose sum is σ = 1048654320. Its totient is φ = 134826912.

The previous prime is 404480821. The next prime is 404480851. The reversal of 404480844 is 448084404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 404480799 and 404480808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872489 + ... + 1872704.

It is an arithmetic number, because the mean of its divisors is an integer number (43693930).

Almost surely, 2^404480844 is an apocalyptic number.

It is an amenable number.

404480844 is an abundant number, since it is smaller than the sum of its proper divisors (644173476).

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

404480844 is a wasteful number, since it uses less digits than its factorization.

404480844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745206 (or 3745198 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The square root of 404480844 is about 20111.7091267749. The cubic root of 404480844 is about 739.5473516166.

The spelling of 404480844 in words is "four hundred four million, four hundred eighty thousand, eight hundred forty-four".