91992313 has 4 divisors (see below), whose sum is σ = 105134080. Its totient is φ = 78850548.

The previous prime is 91992311. The next prime is 91992317. The reversal of 91992313 is 31329919.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 91992313 - 2¹ = 91992311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91992311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6570873 + ... + 6570886.

It is an arithmetic number, because the mean of its divisors is an integer number (26283520).

Almost surely, 2^91992313 is an apocalyptic number.

It is an amenable number.

91992313 is a deficient number, since it is larger than the sum of its proper divisors (13141767).

91992313 is a wasteful number, since it uses less digits than its factorization.

91992313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13141766.

The product of its digits is 13122, while the sum is 37.

The square root of 91992313 is about 9591.2623256796. The cubic root of 91992313 is about 451.4231700575.

The spelling of 91992313 in words is "ninety-one million, nine hundred ninety-two thousand, three hundred thirteen".