91418099 has 2 divisors, whose sum is σ = 91418100. Its totient is φ = 91418098.

The previous prime is 91418087. The next prime is 91418113. The reversal of 91418099 is 99081419.

It is a weak prime.

It is an emirp because it is prime and its reverse (99081419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91418099 - 2²⁰ = 90369523 is a prime.

It is not a weakly prime, because it can be changed into another prime (91418699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45709049 + 45709050.

It is an arithmetic number, because the mean of its divisors is an integer number (45709050).

Almost surely, 2^91418099 is an apocalyptic number.

91418099 is a deficient number, since it is larger than the sum of its proper divisors (1).

91418099 is an equidigital number, since it uses as much as digits as its factorization.

91418099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 91418099 is about 9561.2812425951. The cubic root of 91418099 is about 450.4819511346.

The spelling of 91418099 in words is "ninety-one million, four hundred eighteen thousand, ninety-nine".