91091364 has 48 divisors (see below), whose sum is σ = 261598848. Its totient is φ = 24023808.

The previous prime is 91091333. The next prime is 91091369. The reversal of 91091364 is 46319019.

It is not an unprimeable number, because it can be changed into a prime (91091369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40617 + ... + 42800.

It is an arithmetic number, because the mean of its divisors is an integer number (5449976).

Almost surely, 2^91091364 is an apocalyptic number.

It is an amenable number.

91091364 is an abundant number, since it is smaller than the sum of its proper divisors (170507484).

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

91091364 is a wasteful number, since it uses less digits than its factorization.

91091364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83444 (or 83442 counting only the distinct ones).

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

The square root of 91091364 is about 9544.1795875811. The cubic root of 91091364 is about 449.9446252849.

The spelling of 91091364 in words is "ninety-one million, ninety-one thousand, three hundred sixty-four".