853403904 has 144 divisors (see below), whose sum is σ = 2538157440. Its totient is φ = 282839040.

The previous prime is 853403897. The next prime is 853403917. The reversal of 853403904 is 409304358.

It is a tau number, because it is divible by the number of its divisors (144).

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

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, 2149434 + ... + 2149830.

Almost surely, 2^853403904 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 853403904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269078720).

853403904 is an abundant number, since it is smaller than the sum of its proper divisors (1684753536).

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

853403904 is a wasteful number, since it uses less digits than its factorization.

853403904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 853403904 is about 29213.0776194498. The cubic root of 853403904 is about 948.5310275945.

The spelling of 853403904 in words is "eight hundred fifty-three million, four hundred three thousand, nine hundred four".