91014149 has 2 divisors, whose sum is σ = 91014150. Its totient is φ = 91014148.

The previous prime is 91014139. The next prime is 91014163. The reversal of 91014149 is 94141019.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90345025 + 669124 = 9505^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 91014149 - 2⁸ = 91013893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91014139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45507074 + 45507075.

It is an arithmetic number, because the mean of its divisors is an integer number (45507075).

Almost surely, 2^91014149 is an apocalyptic number.

It is an amenable number.

91014149 is a deficient number, since it is larger than the sum of its proper divisors (1).

91014149 is an equidigital number, since it uses as much as digits as its factorization.

91014149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 91014149 is about 9540.1335944524. The cubic root of 91014149 is about 449.8174551779.

The spelling of 91014149 in words is "ninety-one million, fourteen thousand, one hundred forty-nine".