91389696 has 72 divisors (see below), whose sum is σ = 256072320. Its totient is φ = 28855296.

The previous prime is 91389691. The next prime is 91389713. The reversal of 91389696 is 69698319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91389691) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11461 + ... + 17723.

It is an arithmetic number, because the mean of its divisors is an integer number (3556560).

Almost surely, 2^91389696 is an apocalyptic number.

91389696 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91389696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128036160).

91389696 is an abundant number, since it is smaller than the sum of its proper divisors (164682624).

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

91389696 is a wasteful number, since it uses less digits than its factorization.

91389696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6301 (or 6287 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 91389696 is about 9559.7958137190. The cubic root of 91389696 is about 450.4352923790.

It can be divided in two parts, 913 and 89696, that added together give a palindrome (90609).

The spelling of 91389696 in words is "ninety-one million, three hundred eighty-nine thousand, six hundred ninety-six".