91336091 has 16 divisors (see below), whose sum is σ = 116954880. Its totient is φ = 69245280.

The previous prime is 91336081. The next prime is 91336111. The reversal of 91336091 is 19063319.

It is a cyclic number.

It is not a de Polignac number, because 91336091 - 2²² = 87141787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91336031) 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, 13181 + ... + 18878.

It is an arithmetic number, because the mean of its divisors is an integer number (7309680).

Almost surely, 2^91336091 is an apocalyptic number.

91336091 is a deficient number, since it is larger than the sum of its proper divisors (25618789).

91336091 is a wasteful number, since it uses less digits than its factorization.

91336091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32114.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 91336091 is about 9556.9917338041. The cubic root of 91336091 is about 450.3472069334.

The spelling of 91336091 in words is "ninety-one million, three hundred thirty-six thousand, ninety-one".