91693424 has 10 divisors (see below), whose sum is σ = 177656040. Its totient is φ = 45846704.

The previous prime is 91693423. The next prime is 91693439. The reversal of 91693424 is 42439619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91693423) 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, 2865404 + ... + 2865435.

It is an arithmetic number, because the mean of its divisors is an integer number (17765604).

Almost surely, 2^91693424 is an apocalyptic number.

It is an amenable number.

91693424 is a deficient number, since it is larger than the sum of its proper divisors (85962616).

91693424 is a wasteful number, since it uses less digits than its factorization.

91693424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5730847 (or 5730841 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 91693424 is about 9575.6683317667. The cubic root of 91693424 is about 450.9337385425.

The spelling of 91693424 in words is "ninety-one million, six hundred ninety-three thousand, four hundred twenty-four".