88791139 has 4 divisors (see below), whose sum is σ = 88939480. Its totient is φ = 88642800.

The previous prime is 88791137. The next prime is 88791163. The reversal of 88791139 is 93119788.

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 88791139 - 2¹ = 88791137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88791133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73269 + ... + 74470.

It is an arithmetic number, because the mean of its divisors is an integer number (22234870).

Almost surely, 2^88791139 is an apocalyptic number.

88791139 is a deficient number, since it is larger than the sum of its proper divisors (148341).

88791139 is a wasteful number, since it uses less digits than its factorization.

88791139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148340.

The product of its digits is 108864, while the sum is 46.

The square root of 88791139 is about 9422.9050191541. The cubic root of 88791139 is about 446.1249808934.

The spelling of 88791139 in words is "eighty-eight million, seven hundred ninety-one thousand, one hundred thirty-nine".