91395744444 has 30 divisors (see below), whose sum is σ = 238926530304. Its totient is φ = 30465248040.

The previous prime is 91395744443. The next prime is 91395744499. The reversal of 91395744444 is 44444759319.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91395744443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 141042492 + ... + 141043139.

Almost surely, 2^91395744444 is an apocalyptic number.

It is an amenable number.

91395744444 is an abundant number, since it is smaller than the sum of its proper divisors (147530785860).

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

91395744444 is a wasteful number, since it uses less digits than its factorization.

91395744444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282085647 (or 282085636 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 91395744444 in words is "ninety-one billion, three hundred ninety-five million, seven hundred forty-four thousand, four hundred forty-four".