900099 has 32 divisors (see below), whose sum is σ = 1477440. Its totient is φ = 539136.

The previous prime is 900091. The next prime is 900103. The reversal of 900099 is 990009.

900099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 900099 - 2³ = 900091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

900099 is a modest number, since divided by 99 gives 90 as remainder.

It is not an unprimeable number, because it can be changed into a prime (900091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16957 + ... + 17009.

It is an arithmetic number, because the mean of its divisors is an integer number (46170).

2⁹⁰⁰⁰⁹⁹ is an apocalyptic number.

900099 is a deficient number, since it is larger than the sum of its proper divisors (577341).

900099 is a wasteful number, since it uses less digits than its factorization.

900099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 27.

The square root of 900099 is about 948.7354741971. The cubic root of 900099 is about 96.5524784585.

The spelling of 900099 in words is "nine hundred thousand, ninety-nine".