120839939 has 8 divisors (see below), whose sum is σ = 132278832. Its totient is φ = 109476640.

The previous prime is 120839923. The next prime is 120839959. The reversal of 120839939 is 939938021.

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 120839939 - 2⁴ = 120839923 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 120839939.

It is not an unprimeable number, because it can be changed into a prime (120839959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15524 + ... + 21969.

It is an arithmetic number, because the mean of its divisors is an integer number (16534854).

Almost surely, 2^120839939 is an apocalyptic number.

120839939 is a deficient number, since it is larger than the sum of its proper divisors (11438893).

120839939 is a wasteful number, since it uses less digits than its factorization.

120839939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37797.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 120839939 is about 10992.7220923664. The cubic root of 120839939 is about 494.3905556086.

It can be divided in two parts, 12083 and 9939, that added together give a palindrome (22022).

The spelling of 120839939 in words is "one hundred twenty million, eight hundred thirty-nine thousand, nine hundred thirty-nine".