120099609 has 12 divisors (see below), whose sum is σ = 198259776. Its totient is φ = 68628312.

The previous prime is 120099601. The next prime is 120099631. The reversal of 120099609 is 906990021.

It is not a de Polignac number, because 120099609 - 2³ = 120099601 is a prime.

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 not an unprimeable number, because it can be changed into a prime (120099601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 953109 + ... + 953234.

It is an arithmetic number, because the mean of its divisors is an integer number (16521648).

Almost surely, 2^120099609 is an apocalyptic number.

It is an amenable number.

120099609 is a deficient number, since it is larger than the sum of its proper divisors (78160167).

120099609 is a wasteful number, since it uses less digits than its factorization.

120099609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906356 (or 1906353 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 120099609 is about 10958.9967150283. The cubic root of 120099609 is about 493.3788531875.

The spelling of 120099609 in words is "one hundred twenty million, ninety-nine thousand, six hundred nine".