91845959 has 2 divisors, whose sum is σ = 91845960. Its totient is φ = 91845958.

The previous prime is 91845947. The next prime is 91845983. The reversal of 91845959 is 95954819.

It is a weak prime.

It is an emirp because it is prime and its reverse (95954819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91845959 - 2¹² = 91841863 is a prime.

It is a super-3 number, since 3×91845959³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91845989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45922979 + 45922980.

It is an arithmetic number, because the mean of its divisors is an integer number (45922980).

Almost surely, 2^91845959 is an apocalyptic number.

91845959 is a deficient number, since it is larger than the sum of its proper divisors (1).

91845959 is an equidigital number, since it uses as much as digits as its factorization.

91845959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 50.

The square root of 91845959 is about 9583.6297403437. The cubic root of 91845959 is about 451.1836476745.

The spelling of 91845959 in words is "ninety-one million, eight hundred forty-five thousand, nine hundred fifty-nine".