91936644 has 24 divisors (see below), whose sum is σ = 216931680. Its totient is φ = 30300864.

The previous prime is 91936643. The next prime is 91936679. The reversal of 91936644 is 44663919.

It is a super-3 number, since 3×91936644³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91936596 and 91936605.

It is not an unprimeable number, because it can be changed into a prime (91936643) 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, 41974 + ... + 44109.

It is an arithmetic number, because the mean of its divisors is an integer number (9038820).

Almost surely, 2^91936644 is an apocalyptic number.

It is an amenable number.

91936644 is an abundant number, since it is smaller than the sum of its proper divisors (124995036).

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

91936644 is a wasteful number, since it uses less digits than its factorization.

91936644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86179 (or 86177 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 91936644 is about 9588.3598180294. The cubic root of 91936644 is about 451.3320923485.

The spelling of 91936644 in words is "ninety-one million, nine hundred thirty-six thousand, six hundred forty-four".