91485949 has 2 divisors, whose sum is σ = 91485950. Its totient is φ = 91485948.

The previous prime is 91485913. The next prime is 91485967. The reversal of 91485949 is 94958419.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90117049 + 1368900 = 9493^2 + 1170^2 .

It is a cyclic number.

It is not a de Polignac number, because 91485949 - 2²¹ = 89388797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91488949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45742974 + 45742975.

It is an arithmetic number, because the mean of its divisors is an integer number (45742975).

Almost surely, 2^91485949 is an apocalyptic number.

It is an amenable number.

91485949 is a deficient number, since it is larger than the sum of its proper divisors (1).

91485949 is an equidigital number, since it uses as much as digits as its factorization.

91485949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 49.

The square root of 91485949 is about 9564.8287491204. The cubic root of 91485949 is about 450.5933719657.

The spelling of 91485949 in words is "ninety-one million, four hundred eighty-five thousand, nine hundred forty-nine".