116820139 has 4 divisors (see below), whose sum is σ = 117912024. Its totient is φ = 115728256.

The previous prime is 116820127. The next prime is 116820181. The reversal of 116820139 is 931028611.

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-116820139 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 116820139.

It is not an unprimeable number, because it can be changed into a prime (116824139) 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, 545782 + ... + 545995.

It is an arithmetic number, because the mean of its divisors is an integer number (29478006).

Almost surely, 2^116820139 is an apocalyptic number.

116820139 is a deficient number, since it is larger than the sum of its proper divisors (1091885).

116820139 is a wasteful number, since it uses less digits than its factorization.

116820139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091884.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 116820139 is about 10808.3365510147. The cubic root of 116820139 is about 488.8465706617.

The spelling of 116820139 in words is "one hundred sixteen million, eight hundred twenty thousand, one hundred thirty-nine".