88955991 has 12 divisors (see below), whose sum is σ = 128623768. Its totient is φ = 59243184.

The previous prime is 88955987. The next prime is 88956017. The reversal of 88955991 is 19955988.

88955991 is a `hidden beast` number, since 8 + 89 + 559 + 9 + 1 = 666.

It is not a de Polignac number, because 88955991 - 2² = 88955987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88955981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5316 + ... + 14358.

Almost surely, 2^88955991 is an apocalyptic number.

88955991 is a deficient number, since it is larger than the sum of its proper divisors (39667777).

88955991 is a wasteful number, since it uses less digits than its factorization.

88955991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10142 (or 10139 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 54.

The square root of 88955991 is about 9431.6483713082. The cubic root of 88955991 is about 446.4009060518.

The spelling of 88955991 in words is "eighty-eight million, nine hundred fifty-five thousand, nine hundred ninety-one".