91964444 has 48 divisors (see below), whose sum is σ = 193522560. Its totient is φ = 37679040.

The previous prime is 91964417. The next prime is 91964447. The reversal of 91964444 is 44446919.

It is a happy number.

It is a super-3 number, since 3×91964444³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91964447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22727 + ... + 26465.

It is an arithmetic number, because the mean of its divisors is an integer number (4031720).

Almost surely, 2^91964444 is an apocalyptic number.

It is an amenable number.

91964444 is an abundant number, since it is smaller than the sum of its proper divisors (101558116).

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

91964444 is a wasteful number, since it uses less digits than its factorization.

91964444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810 (or 3808 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 91964444 is about 9589.8093828814. The cubic root of 91964444 is about 451.3775793533.

The spelling of 91964444 in words is "ninety-one million, nine hundred sixty-four thousand, four hundred forty-four".