404402144 has 24 divisors (see below), whose sum is σ = 796614840. Its totient is φ = 202087296.

The previous prime is 404402087. The next prime is 404402153. The reversal of 404402144 is 441204404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109187 + ... + 112829.

It is an arithmetic number, because the mean of its divisors is an integer number (33192285).

Almost surely, 2^404402144 is an apocalyptic number.

It is an amenable number.

404402144 is a deficient number, since it is larger than the sum of its proper divisors (392212696).

404402144 is a wasteful number, since it uses less digits than its factorization.

404402144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7122 (or 7114 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 404402144 is about 20109.7524599384. The cubic root of 404402144 is about 739.4993838305.

Adding to 404402144 its reverse (441204404), we get a palindrome (845606548).

The spelling of 404402144 in words is "four hundred four million, four hundred two thousand, one hundred forty-four".