89917 has 2 divisors, whose sum is σ = 89918. Its totient is φ = 89916.

The previous prime is 89909. The next prime is 89923. The reversal of 89917 is 71998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86436 + 3481 = 294^2 + 59^2 .

It is a cyclic number.

It is not a de Polignac number, because 89917 - 2³ = 89909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44958 + 44959.

It is an arithmetic number, because the mean of its divisors is an integer number (44959).

2⁸⁹⁹¹⁷ is an apocalyptic number.

It is an amenable number.

89917 is a deficient number, since it is larger than the sum of its proper divisors (1).

89917 is an equidigital number, since it uses as much as digits as its factorization.

89917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 34.

The square root of 89917 is about 299.8616347584. The cubic root of 89917 is about 44.8002670584.

It can be divided in two parts, 8991 and 7, that added together give a palindrome (8998).

The spelling of 89917 in words is "eighty-nine thousand, nine hundred seventeen".