91769449 has 6 divisors (see below), whose sum is σ = 96854010. Its totient is φ = 86939136.

The previous prime is 91769443. The next prime is 91769453. The reversal of 91769449 is 94496719.

It can be written as a sum of positive squares in only one way, i.e., 46785600 + 44983849 = 6840^2 + 6707^2 .

It is not a de Polignac number, because 91769449 - 2³ = 91769441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91769441) 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 in 5 ways as a sum of consecutive naturals, for example, 126744 + ... + 127465.

It is an arithmetic number, because the mean of its divisors is an integer number (16142335).

Almost surely, 2^91769449 is an apocalyptic number.

It is an amenable number.

91769449 is a deficient number, since it is larger than the sum of its proper divisors (5084561).

91769449 is a wasteful number, since it uses less digits than its factorization.

91769449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254247 (or 254228 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 91769449 is about 9579.6372060741. The cubic root of 91769449 is about 451.0583304184.

The spelling of 91769449 in words is "ninety-one million, seven hundred sixty-nine thousand, four hundred forty-nine".