403964404 has 12 divisors (see below), whose sum is σ = 748522404. Its totient is φ = 190100864.

The previous prime is 403964399. The next prime is 403964413. The reversal of 403964404 is 404469304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 224940004 + 179024400 = 14998^2 + 13380^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 403964404.

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, 2970259 + ... + 2970394.

It is an arithmetic number, because the mean of its divisors is an integer number (62376867).

Almost surely, 2^403964404 is an apocalyptic number.

It is an amenable number.

403964404 is a deficient number, since it is larger than the sum of its proper divisors (344558000).

403964404 is a wasteful number, since it uses less digits than its factorization.

403964404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5940674 (or 5940672 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 403964404 is about 20098.8657391406. The cubic root of 403964404 is about 739.2324669068.

The spelling of 403964404 in words is "four hundred three million, nine hundred sixty-four thousand, four hundred four".