91162849 has 2 divisors, whose sum is σ = 91162850. Its totient is φ = 91162848.

The previous prime is 91162843. The next prime is 91162867. The reversal of 91162849 is 94826119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85895824 + 5267025 = 9268^2 + 2295^2 .

It is a cyclic number.

It is not a de Polignac number, because 91162849 - 2¹⁷ = 91031777 is a prime.

It is not a weakly prime, because it can be changed into another prime (91162843) 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, 45581424 + 45581425.

It is an arithmetic number, because the mean of its divisors is an integer number (45581425).

Almost surely, 2^91162849 is an apocalyptic number.

It is an amenable number.

91162849 is a deficient number, since it is larger than the sum of its proper divisors (1).

91162849 is an equidigital number, since it uses as much as digits as its factorization.

91162849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 91162849 is about 9547.9238057287. The cubic root of 91162849 is about 450.0622942568.

The spelling of 91162849 in words is "ninety-one million, one hundred sixty-two thousand, eight hundred forty-nine".