91190959 has 2 divisors, whose sum is σ = 91190960. Its totient is φ = 91190958.

The previous prime is 91190927. The next prime is 91190971. The reversal of 91190959 is 95909119.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91190959 - 2⁵ = 91190927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91190989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45595479 + 45595480.

It is an arithmetic number, because the mean of its divisors is an integer number (45595480).

Almost surely, 2^91190959 is an apocalyptic number.

91190959 is a deficient number, since it is larger than the sum of its proper divisors (1).

91190959 is an equidigital number, since it uses as much as digits as its factorization.

91190959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32805, while the sum is 43.

The square root of 91190959 is about 9549.3957400455. The cubic root of 91190959 is about 450.1085482996.

The spelling of 91190959 in words is "ninety-one million, one hundred ninety thousand, nine hundred fifty-nine".