91189696 has 42 divisors (see below), whose sum is σ = 195968112. Its totient is φ = 42082560.

The previous prime is 91189669. The next prime is 91189697. The reversal of 91189696 is 69698119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91189697) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6601 + ... + 15031.

Almost surely, 2^91189696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91189696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97984056).

91189696 is an abundant number, since it is smaller than the sum of its proper divisors (104778416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91189696 is a wasteful number, since it uses less digits than its factorization.

91189696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8469 (or 8446 counting only the distinct ones).

The product of its digits is 209952, while the sum is 49.

The square root of 91189696 is about 9549.3296099779. The cubic root of 91189696 is about 450.1064702803.

The spelling of 91189696 in words is "ninety-one million, one hundred eighty-nine thousand, six hundred ninety-six".