404442860 has 48 divisors (see below), whose sum is σ = 875381472. Its totient is φ = 156864000.

The previous prime is 404442853. The next prime is 404442877. The reversal of 404442860 is 68244404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140435 + ... + 143285.

It is an arithmetic number, because the mean of its divisors is an integer number (18237114).

Almost surely, 2^404442860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404442860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437690736).

404442860 is an abundant number, since it is smaller than the sum of its proper divisors (470938612).

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

404442860 is a wasteful number, since it uses less digits than its factorization.

404442860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074 (or 3072 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 404442860 is about 20110.7647790928. The cubic root of 404442860 is about 739.5242010798.

The spelling of 404442860 in words is "four hundred four million, four hundred forty-two thousand, eight hundred sixty".