91375699 has 2 divisors, whose sum is σ = 91375700. Its totient is φ = 91375698.

The previous prime is 91375679. The next prime is 91375721. The reversal of 91375699 is 99657319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91375699 - 2⁵ = 91375667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91375679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45687849 + 45687850.

It is an arithmetic number, because the mean of its divisors is an integer number (45687850).

Almost surely, 2^91375699 is an apocalyptic number.

91375699 is a deficient number, since it is larger than the sum of its proper divisors (1).

91375699 is an equidigital number, since it uses as much as digits as its factorization.

91375699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 49.

The square root of 91375699 is about 9559.0637093807. The cubic root of 91375699 is about 450.4122953857.

The spelling of 91375699 in words is "ninety-one million, three hundred seventy-five thousand, six hundred ninety-nine".