91944760 has 32 divisors (see below), whose sum is σ = 213552000. Its totient is φ = 35591040.

The previous prime is 91944757. The next prime is 91944767. The reversal of 91944760 is 6744919.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91944767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35835 + ... + 38314.

It is an arithmetic number, because the mean of its divisors is an integer number (6673500).

Almost surely, 2^91944760 is an apocalyptic number.

It is an amenable number.

91944760 is an abundant number, since it is smaller than the sum of its proper divisors (121607240).

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

91944760 is a wasteful number, since it uses less digits than its factorization.

91944760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74191 (or 74187 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 91944760 is about 9588.7830301869. The cubic root of 91944760 is about 451.3453728836.

The spelling of 91944760 in words is "ninety-one million, nine hundred forty-four thousand, seven hundred sixty".