91383900 has 72 divisors (see below), whose sum is σ = 265399680. Its totient is φ = 24277440.

The previous prime is 91383893. The next prime is 91383923. The reversal of 91383900 is 938319.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 125337 + ... + 126063.

Almost surely, 2^91383900 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 91383900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132699840).

91383900 is an abundant number, since it is smaller than the sum of its proper divisors (174015780).

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

91383900 is a wasteful number, since it uses less digits than its factorization.

91383900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 91383900 is about 9559.4926643625. The cubic root of 91383900 is about 450.4257698681.

The spelling of 91383900 in words is "ninety-one million, three hundred eighty-three thousand, nine hundred".