88139811 has 8 divisors (see below), whose sum is σ = 117722304. Its totient is φ = 58658600.

The previous prime is 88139801. The next prime is 88139833. The reversal of 88139811 is 11893188.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 88139811 - 2⁷ = 88139683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 88139811.

It is not an unprimeable number, because it can be changed into a prime (88139801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23265 + ... + 26786.

It is an arithmetic number, because the mean of its divisors is an integer number (14715288).

Almost surely, 2^88139811 is an apocalyptic number.

88139811 is a deficient number, since it is larger than the sum of its proper divisors (29582493).

88139811 is a wasteful number, since it uses less digits than its factorization.

88139811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50641.

The product of its digits is 13824, while the sum is 39.

The square root of 88139811 is about 9388.2805134913. The cubic root of 88139811 is about 445.0314517180.

The spelling of 88139811 in words is "eighty-eight million, one hundred thirty-nine thousand, eight hundred eleven".