904905099 has 72 divisors (see below), whose sum is σ = 1557024768. Its totient is φ = 504856800.

The previous prime is 904905091. The next prime is 904905101. The reversal of 904905099 is 990509409.

It is a happy number.

It is not a de Polignac number, because 904905099 - 2³ = 904905091 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (904905091) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5992674 + ... + 5992824.

It is an arithmetic number, because the mean of its divisors is an integer number (21625344).

Almost surely, 2^904905099 is an apocalyptic number.

904905099 is a deficient number, since it is larger than the sum of its proper divisors (652119669).

904905099 is a wasteful number, since it uses less digits than its factorization.

904905099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 904905099 is about 30081.6405636395. The cubic root of 904905099 is about 967.2402154905.

The spelling of 904905099 in words is "nine hundred four million, nine hundred five thousand, ninety-nine".