91996 has 12 divisors (see below), whose sum is σ = 163240. Its totient is φ = 45360.

The previous prime is 91969. The next prime is 91997. The reversal of 91996 is 69919.

It is a happy number.

91996 is nontrivially palindromic in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331 + ... + 541.

2⁹¹⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

91996 is a deficient number, since it is larger than the sum of its proper divisors (71244).

91996 is a wasteful number, since it uses less digits than its factorization.

91996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 322 counting only the distinct ones).

The product of its digits is 4374, while the sum is 34.

The square root of 91996 is about 303.3084238857. The cubic root of 91996 is about 45.1429200906.

The spelling of 91996 in words is "ninety-one thousand, nine hundred ninety-six".