91000936 has 32 divisors (see below), whose sum is σ = 184602600. Its totient is φ = 41806080.

The previous prime is 91000933. The next prime is 91000963. The reversal of 91000936 is 63900019.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 90136036 + 864900 = 9494^2 + 930^2 .

It is not an unprimeable number, because it can be changed into a prime (91000933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21906 + ... + 25726.

Almost surely, 2^91000936 is an apocalyptic number.

It is an amenable number.

91000936 is an abundant number, since it is smaller than the sum of its proper divisors (93601664).

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

91000936 is a wasteful number, since it uses less digits than its factorization.

91000936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4069 (or 4065 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 91000936 is about 9539.4410737737. The cubic root of 91000936 is about 449.7956866736.

The spelling of 91000936 in words is "ninety-one million, nine hundred thirty-six", and thus it is an aban number.