120959999 has 4 divisors (see below), whose sum is σ = 123533664. Its totient is φ = 118386336.

The previous prime is 120959977. The next prime is 120960001. The reversal of 120959999 is 999959021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120959999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120959999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120955999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286762 + ... + 1286855.

It is an arithmetic number, because the mean of its divisors is an integer number (30883416).

Almost surely, 2^120959999 is an apocalyptic number.

120959999 is a deficient number, since it is larger than the sum of its proper divisors (2573665).

120959999 is an equidigital number, since it uses as much as digits as its factorization.

120959999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573664.

The product of its (nonzero) digits is 590490, while the sum is 53.

The square root of 120959999 is about 10998.1816224320. The cubic root of 120959999 is about 494.5542346142.

The spelling of 120959999 in words is "one hundred twenty million, nine hundred fifty-nine thousand, nine hundred ninety-nine".