120515989 has 8 divisors (see below), whose sum is σ = 132024960. Its totient is φ = 109099200.

The previous prime is 120515981. The next prime is 120515999. The reversal of 120515989 is 989515021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120515989 - 2³ = 120515981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120515981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20292 + ... + 25549.

It is an arithmetic number, because the mean of its divisors is an integer number (16503120).

Almost surely, 2^120515989 is an apocalyptic number.

It is an amenable number.

120515989 is a deficient number, since it is larger than the sum of its proper divisors (11508971).

120515989 is a wasteful number, since it uses less digits than its factorization.

120515989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46091.

The product of its (nonzero) digits is 32400, while the sum is 40.

The square root of 120515989 is about 10977.9774548867. The cubic root of 120515989 is about 493.9483697072.

The spelling of 120515989 in words is "one hundred twenty million, five hundred fifteen thousand, nine hundred eighty-nine".