91444752 has 120 divisors (see below), whose sum is σ = 296272704. Its totient is φ = 25788672.

The previous prime is 91444747. The next prime is 91444753. The reversal of 91444752 is 25744419.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (91444753) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83118 + ... + 84210.

Almost surely, 2^91444752 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 91444752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148136352).

91444752 is an abundant number, since it is smaller than the sum of its proper divisors (204827952).

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

91444752 is a wasteful number, since it uses less digits than its factorization.

91444752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1188 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 91444752 is about 9562.6749395763. The cubic root of 91444752 is about 450.5257263057.

The spelling of 91444752 in words is "ninety-one million, four hundred forty-four thousand, seven hundred fifty-two".