120808289 has 12 divisors (see below), whose sum is σ = 145718784. Its totient is φ = 98097912.

The previous prime is 120808279. The next prime is 120808309. The reversal of 120808289 is 982808021.

It is a de Polignac number, because none of the positive numbers 2^k-120808289 is a prime.

It is a super-2 number, since 2×120808289² = 29189285382215042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120808279) 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, 21377 + ... + 26430.

It is an arithmetic number, because the mean of its divisors is an integer number (12143232).

Almost surely, 2^120808289 is an apocalyptic number.

120808289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

120808289 is a deficient number, since it is larger than the sum of its proper divisors (24910495).

120808289 is an equidigital number, since it uses as much as digits as its factorization.

120808289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47852 (or 47833 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 120808289 is about 10991.2824092551. The cubic root of 120808289 is about 494.3473887894.

The spelling of 120808289 in words is "one hundred twenty million, eight hundred eight thousand, two hundred eighty-nine".