91099316 has 24 divisors (see below), whose sum is σ = 198762816. Its totient is φ = 35493120.

The previous prime is 91099313. The next prime is 91099321. The reversal of 91099316 is 61399019.

It is a self number, because there is not a number n which added to its sum of digits gives 91099316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91099313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147581 + ... + 148196.

It is an arithmetic number, because the mean of its divisors is an integer number (8281784).

Almost surely, 2^91099316 is an apocalyptic number.

It is an amenable number.

91099316 is an abundant number, since it is smaller than the sum of its proper divisors (107663500).

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

91099316 is a wasteful number, since it uses less digits than its factorization.

91099316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295799 (or 295797 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 91099316 is about 9544.5961674657. The cubic root of 91099316 is about 449.9577178380.

The spelling of 91099316 in words is "ninety-one million, ninety-nine thousand, three hundred sixteen".