91494868 has 12 divisors (see below), whose sum is σ = 160184052. Its totient is φ = 45728000.

The previous prime is 91494863. The next prime is 91494869. The reversal of 91494868 is 86849419.

It can be written as a sum of positive squares in 2 ways, for example, as 23794884 + 67699984 = 4878^2 + 8228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91494863) 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 3 ways as a sum of consecutive naturals, for example, 13146 + ... + 18862.

It is an arithmetic number, because the mean of its divisors is an integer number (13348671).

Almost surely, 2^91494868 is an apocalyptic number.

It is an amenable number.

91494868 is a deficient number, since it is larger than the sum of its proper divisors (68689184).

91494868 is a wasteful number, since it uses less digits than its factorization.

91494868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722 (or 9720 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 91494868 is about 9565.2949771557. The cubic root of 91494868 is about 450.6080143297.

The spelling of 91494868 in words is "ninety-one million, four hundred ninety-four thousand, eight hundred sixty-eight".