91495949 has 2 divisors, whose sum is σ = 91495950. Its totient is φ = 91495948.

The previous prime is 91495933. The next prime is 91495979. The reversal of 91495949 is 94959419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91489225 + 6724 = 9565^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 91495949 - 2⁴ = 91495933 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91495897 and 91495906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91495979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45747974 + 45747975.

It is an arithmetic number, because the mean of its divisors is an integer number (45747975).

Almost surely, 2^91495949 is an apocalyptic number.

It is an amenable number.

91495949 is a deficient number, since it is larger than the sum of its proper divisors (1).

91495949 is an equidigital number, since it uses as much as digits as its factorization.

91495949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 50.

The square root of 91495949 is about 9565.3514833486. The cubic root of 91495949 is about 450.6097889478.

The spelling of 91495949 in words is "ninety-one million, four hundred ninety-five thousand, nine hundred forty-nine".