95991 has 12 divisors (see below), whose sum is σ = 149112. Its totient is φ = 54768.

The previous prime is 95989. The next prime is 96001. The reversal of 95991 is 19959.

It is not a de Polignac number, because 95991 - 2¹ = 95989 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (95911) 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 11 ways as a sum of consecutive naturals, for example, 180 + ... + 473.

It is an arithmetic number, because the mean of its divisors is an integer number (12426).

2⁹⁵⁹⁹¹ is an apocalyptic number.

95991 is a deficient number, since it is larger than the sum of its proper divisors (53121).

95991 is a wasteful number, since it uses less digits than its factorization.

95991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 663 counting only the distinct ones).

The product of its digits is 3645, while the sum is 33.

The square root of 95991 is about 309.8241436686. The cubic root of 95991 is about 45.7871387646.

The spelling of 95991 in words is "ninety-five thousand, nine hundred ninety-one".