404421860 has 24 divisors (see below), whose sum is σ = 854038080. Its totient is φ = 160863584.

The previous prime is 404421851. The next prime is 404421869. The reversal of 404421860 is 68124404.

It is an interprime number because it is at equal distance from previous prime (404421851) and next prime (404421869).

It is not an unprimeable number, because it can be changed into a prime (404421869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52904 + ... + 60063.

It is an arithmetic number, because the mean of its divisors is an integer number (35584920).

Almost surely, 2^404421860 is an apocalyptic number.

It is an amenable number.

404421860 is an abundant number, since it is smaller than the sum of its proper divisors (449616220).

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

404421860 is a wasteful number, since it uses less digits than its factorization.

404421860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113155 (or 113153 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 404421860 is about 20110.2426638765. The cubic root of 404421860 is about 739.5114013508.

The spelling of 404421860 in words is "four hundred four million, four hundred twenty-one thousand, eight hundred sixty".