91852489 has 2 divisors, whose sum is σ = 91852490. Its totient is φ = 91852488.

The previous prime is 91852477. The next prime is 91852499. The reversal of 91852489 is 98425819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91011600 + 840889 = 9540^2 + 917^2 .

It is a cyclic number.

It is not a de Polignac number, because 91852489 - 2²⁵ = 58298057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91852459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45926244 + 45926245.

It is an arithmetic number, because the mean of its divisors is an integer number (45926245).

Almost surely, 2^91852489 is an apocalyptic number.

It is an amenable number.

91852489 is a deficient number, since it is larger than the sum of its proper divisors (1).

91852489 is an equidigital number, since it uses as much as digits as its factorization.

91852489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 46.

The square root of 91852489 is about 9583.9704194034. The cubic root of 91852489 is about 451.1943400679.

The spelling of 91852489 in words is "ninety-one million, eight hundred fifty-two thousand, four hundred eighty-nine".