113878139 has 4 divisors (see below), whose sum is σ = 114983856. Its totient is φ = 112772424.

The previous prime is 113878117. The next prime is 113878183. The reversal of 113878139 is 931878311.

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 113878139 - 2¹² = 113874043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113878096 and 113878105.

It is not an unprimeable number, because it can be changed into a prime (113878109) 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, 552704 + ... + 552909.

It is an arithmetic number, because the mean of its divisors is an integer number (28745964).

Almost surely, 2^113878139 is an apocalyptic number.

113878139 is a deficient number, since it is larger than the sum of its proper divisors (1105717).

113878139 is a wasteful number, since it uses less digits than its factorization.

113878139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105716.

The product of its digits is 36288, while the sum is 41.

The square root of 113878139 is about 10671.3700619930. The cubic root of 113878139 is about 484.7079248974.

The spelling of 113878139 in words is "one hundred thirteen million, eight hundred seventy-eight thousand, one hundred thirty-nine".