91964808 has 112 divisors (see below), whose sum is σ = 278649420. Its totient is φ = 28273536.

The previous prime is 91964783. The next prime is 91964813. The reversal of 91964808 is 80846919.

It can be written as a sum of positive squares in 2 ways, for example, as 71876484 + 20088324 = 8478^2 + 4482^2 .

It is a super-3 number, since 3×91964808³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 75210 + ... + 76422.

Almost surely, 2^91964808 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 91964808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139324710).

91964808 is an abundant number, since it is smaller than the sum of its proper divisors (186684612).

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

91964808 is a wasteful number, since it uses less digits than its factorization.

91964808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 91964808 is about 9589.8283613420. The cubic root of 91964808 is about 451.3781748778.

The spelling of 91964808 in words is "ninety-one million, nine hundred sixty-four thousand, eight hundred eight".