120489979 has 4 divisors (see below), whose sum is σ = 121556376. Its totient is φ = 119423584.

The previous prime is 120489961. The next prime is 120489989. The reversal of 120489979 is 979984021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979984021 = 4409 ⋅222269.

It is a cyclic number.

It is not a de Polignac number, because 120489979 - 2¹³ = 120481787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120489949) 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, 533029 + ... + 533254.

It is an arithmetic number, because the mean of its divisors is an integer number (30389094).

Almost surely, 2^120489979 is an apocalyptic number.

120489979 is a deficient number, since it is larger than the sum of its proper divisors (1066397).

120489979 is a wasteful number, since it uses less digits than its factorization.

120489979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066396.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 120489979 is about 10976.7927465175. The cubic root of 120489979 is about 493.9128321779.

The spelling of 120489979 in words is "one hundred twenty million, four hundred eighty-nine thousand, nine hundred seventy-nine".