406553904 has 50 divisors (see below), whose sum is σ = 1176688700. Its totient is φ = 135517536.

The previous prime is 406553899. The next prime is 406553941. The reversal of 406553904 is 409355604.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 9 ways as a sum of consecutive naturals, for example, 155554 + ... + 158145.

It is an arithmetic number, because the mean of its divisors is an integer number (23533774).

Almost surely, 2^406553904 is an apocalyptic number.

It is an amenable number.

406553904 is an abundant number, since it is smaller than the sum of its proper divisors (770134796).

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

406553904 is a wasteful number, since it uses less digits than its factorization.

406553904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313719 (or 313704 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 406553904 is about 20163.1818917551. The cubic root of 406553904 is about 740.8086509477.

The spelling of 406553904 in words is "four hundred six million, five hundred fifty-three thousand, nine hundred four".