88139 has 4 divisors (see below), whose sum is σ = 89856. Its totient is φ = 86424.

The previous prime is 88129. The next prime is 88169. The reversal of 88139 is 93188.

It is a happy number.

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-88139 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 88139.

It is not an unprimeable number, because it can be changed into a prime (88129) 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, 779 + ... + 884.

It is an arithmetic number, because the mean of its divisors is an integer number (22464).

2⁸⁸¹³⁹ is an apocalyptic number.

88139 is a deficient number, since it is larger than the sum of its proper divisors (1717).

88139 is a wasteful number, since it uses less digits than its factorization.

88139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716.

The product of its digits is 1728, while the sum is 29.

The square root of 88139 is about 296.8821314933. The cubic root of 88139 is about 44.5030086759.

The spelling of 88139 in words is "eighty-eight thousand, one hundred thirty-nine".