91417 has 4 divisors (see below), whose sum is σ = 92340. Its totient is φ = 90496.

The previous prime is 91411. The next prime is 91423. The reversal of 91417 is 71419.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (91411) and next prime (91423).

It can be written as a sum of positive squares in 2 ways, for example, as 35721 + 55696 = 189^2 + 236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91417 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (23085).

2⁹¹⁴¹⁷ is an apocalyptic number.

It is an amenable number.

91417 is a deficient number, since it is larger than the sum of its proper divisors (923).

91417 is a wasteful number, since it uses less digits than its factorization.

91417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922.

The product of its digits is 252, while the sum is 22.

The square root of 91417 is about 302.3524433505. The cubic root of 91417 is about 45.0480145943.

The spelling of 91417 in words is "ninety-one thousand, four hundred seventeen".