91398096 has 30 divisors (see below), whose sum is σ = 255788130. Its totient is φ = 30465984.

The previous prime is 91398071. The next prime is 91398101. The reversal of 91398096 is 69089319.

It can be written as a sum of positive squares in only one way, i.e., 89870400 + 1527696 = 9480^2 + 1236^2 .

It is a super-2 number, since 2×91398096² = 16707223904850432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317211 + ... + 317498.

It is an arithmetic number, because the mean of its divisors is an integer number (8526271).

Almost surely, 2^91398096 is an apocalyptic number.

It is an amenable number.

91398096 is an abundant number, since it is smaller than the sum of its proper divisors (164390034).

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

91398096 is a wasteful number, since it uses less digits than its factorization.

91398096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634723 (or 634714 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 91398096 is about 9560.2351435516. The cubic root of 91398096 is about 450.4490924050.

The spelling of 91398096 in words is "ninety-one million, three hundred ninety-eight thousand, ninety-six".