88538691 has 16 divisors (see below), whose sum is σ = 120713600. Its totient is φ = 57708288.

The previous prime is 88538683. The next prime is 88538701. The reversal of 88538691 is 19683588.

It is not a de Polignac number, because 88538691 - 2³ = 88538683 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is the 9410-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88538691.

It is not an unprimeable number, because it can be changed into a prime (88538621) by changing a digit.

It is a nontrivial repunit in base 9409.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26355 + ... + 29523.

It is an arithmetic number, because the mean of its divisors is an integer number (7544600).

Almost surely, 2^88538691 is an apocalyptic number.

88538691 is a deficient number, since it is larger than the sum of its proper divisors (32174909).

88538691 is a wasteful number, since it uses less digits than its factorization.

88538691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378.

The product of its digits is 414720, while the sum is 48.

The square root of 88538691 is about 9409.5000398533. The cubic root of 88538691 is about 445.7017770129.

The spelling of 88538691 in words is "eighty-eight million, five hundred thirty-eight thousand, six hundred ninety-one".