999955404 has 36 divisors (see below), whose sum is σ = 2888760784. Its totient is φ = 285701472.

The previous prime is 999955393. The next prime is 999955417. The reversal of 999955404 is 404559999.

999955404 is a `hidden beast` number, since 9 + 9 + 9 + 95 + 540 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1983787 + ... + 1984290.

Almost surely, 2^999955404 is an apocalyptic number.

It is an amenable number.

999955404 is an abundant number, since it is smaller than the sum of its proper divisors (1888805380).

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

999955404 is a wasteful number, since it uses less digits than its factorization.

999955404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968094 (or 3968089 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 54.

The square root of 999955404 is about 31622.0714691495. The cubic root of 999955404 is about 999.9851344457.

The spelling of 999955404 in words is "nine hundred ninety-nine million, nine hundred fifty-five thousand, four hundred four".