904439172 has 96 divisors (see below), whose sum is σ = 2660845824. Its totient is φ = 232704000.

The previous prime is 904439149. The next prime is 904439177. The reversal of 904439172 is 271934409.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 904439172.

It is not an unprimeable number, because it can be changed into a prime (904439177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34672 + ... + 54872.

It is an arithmetic number, because the mean of its divisors is an integer number (27717144).

Almost surely, 2^904439172 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 904439172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330422912).

904439172 is an abundant number, since it is smaller than the sum of its proper divisors (1756406652).

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

904439172 is a wasteful number, since it uses less digits than its factorization.

904439172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20269 (or 20267 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 904439172 is about 30073.8951916774. The cubic root of 904439172 is about 967.0741794049.

The spelling of 904439172 in words is "nine hundred four million, four hundred thirty-nine thousand, one hundred seventy-two".