91492913 has 4 divisors (see below), whose sum is σ = 91513968. Its totient is φ = 91471860.

The previous prime is 91492909. The next prime is 91492927. The reversal of 91492913 is 31929419.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31929419 = 563 ⋅56713.

It is a cyclic number.

It is not a de Polignac number, because 91492913 - 2² = 91492909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91492903) 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 in 3 ways as a sum of consecutive naturals, for example, 1331 + ... + 13592.

It is an arithmetic number, because the mean of its divisors is an integer number (22878492).

Almost surely, 2^91492913 is an apocalyptic number.

It is an amenable number.

91492913 is a deficient number, since it is larger than the sum of its proper divisors (21055).

91492913 is a wasteful number, since it uses less digits than its factorization.

91492913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21054.

The product of its digits is 17496, while the sum is 38.

The square root of 91492913 is about 9565.1927842569. The cubic root of 91492913 is about 450.6048048785.

The spelling of 91492913 in words is "ninety-one million, four hundred ninety-two thousand, nine hundred thirteen".