91364448 has 96 divisors (see below), whose sum is σ = 277724160. Its totient is φ = 25758720.

The previous prime is 91364447. The next prime is 91364453. The reversal of 91364448 is 84446319.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91364447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52228 + ... + 53948.

It is an arithmetic number, because the mean of its divisors is an integer number (2892960).

Almost surely, 2^91364448 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 91364448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138862080).

91364448 is an abundant number, since it is smaller than the sum of its proper divisors (186359712).

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

91364448 is a wasteful number, since it uses less digits than its factorization.

91364448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820 (or 1812 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 91364448 is about 9558.4751922051. The cubic root of 91364448 is about 450.3938083525.

The spelling of 91364448 in words is "ninety-one million, three hundred sixty-four thousand, four hundred forty-eight".