9904555 has 4 divisors (see below), whose sum is σ = 11885472. Its totient is φ = 7923640.

The previous prime is 9904547. The next prime is 9904579. The reversal of 9904555 is 5554099.

9904555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9904555 - 2³ = 9904547 is a prime.

It is a Duffinian 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, 990451 + ... + 990460.

It is an arithmetic number, because the mean of its divisors is an integer number (2971368).

Almost surely, 2^9904555 is an apocalyptic number.

9904555 is a deficient number, since it is larger than the sum of its proper divisors (1980917).

9904555 is a wasteful number, since it uses less digits than its factorization.

9904555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980916.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 9904555 is about 3147.1502982857. The cubic root of 9904555 is about 214.7558432629.

The spelling of 9904555 in words is "nine million, nine hundred four thousand, five hundred fifty-five".