118798139 has 4 divisors (see below), whose sum is σ = 118838160. Its totient is φ = 118758120.

The previous prime is 118798133. The next prime is 118798153. The reversal of 118798139 is 931897811.

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 118798139 - 2¹² = 118794043 is a prime.

It is a super-2 number, since 2×118798139² = 28225995659726642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118798093 and 118798102.

It is not an unprimeable number, because it can be changed into a prime (118798133) 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, 15167 + ... + 21624.

It is an arithmetic number, because the mean of its divisors is an integer number (29709540).

Almost surely, 2^118798139 is an apocalyptic number.

118798139 is a deficient number, since it is larger than the sum of its proper divisors (40021).

118798139 is an equidigital number, since it uses as much as digits as its factorization.

118798139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40020.

The product of its digits is 108864, while the sum is 47.

The square root of 118798139 is about 10899.4559038513. The cubic root of 118798139 is about 491.5901954162.

The spelling of 118798139 in words is "one hundred eighteen million, seven hundred ninety-eight thousand, one hundred thirty-nine".