91093699 has 4 divisors (see below), whose sum is σ = 92637720. Its totient is φ = 89549680.

The previous prime is 91093649. The next prime is 91093703. The reversal of 91093699 is 99639019.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91093699 - 2⁷ = 91093571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91093609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771922 + ... + 772039.

It is an arithmetic number, because the mean of its divisors is an integer number (23159430).

Almost surely, 2^91093699 is an apocalyptic number.

91093699 is a deficient number, since it is larger than the sum of its proper divisors (1544021).

91093699 is a wasteful number, since it uses less digits than its factorization.

91093699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544020.

The product of its (nonzero) digits is 118098, while the sum is 46.

The square root of 91093699 is about 9544.3019126597. The cubic root of 91093699 is about 449.9484698196.

The spelling of 91093699 in words is "ninety-one million, ninety-three thousand, six hundred ninety-nine".