920116139 has 4 divisors (see below), whose sum is σ = 920238240. Its totient is φ = 919994040.

The previous prime is 920116123. The next prime is 920116187. The reversal of 920116139 is 931611029.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 920116139 - 2⁴ = 920116123 is a prime.

It is a super-2 number, since 2×920116139² = 1693227418496534642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920116189) 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, 48947 + ... + 65084.

It is an arithmetic number, because the mean of its divisors is an integer number (230059560).

Almost surely, 2^920116139 is an apocalyptic number.

920116139 is a deficient number, since it is larger than the sum of its proper divisors (122101).

920116139 is a wasteful number, since it uses less digits than its factorization.

920116139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122100.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 920116139 is about 30333.4162105095. The cubic root of 920116139 is about 972.6297504004.

The spelling of 920116139 in words is "nine hundred twenty million, one hundred sixteen thousand, one hundred thirty-nine".