89797 has 2 divisors, whose sum is σ = 89798. Its totient is φ = 89796.

The previous prime is 89783. The next prime is 89809. The reversal of 89797 is 79798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64516 + 25281 = 254^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 89797 - 2⁷ = 89669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44898 + 44899.

It is an arithmetic number, because the mean of its divisors is an integer number (44899).

2⁸⁹⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

89797 is a deficient number, since it is larger than the sum of its proper divisors (1).

89797 is an equidigital number, since it uses as much as digits as its factorization.

89797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 40.

The square root of 89797 is about 299.6614756688. The cubic root of 89797 is about 44.7803285767.

Subtracting from 89797 its reverse (79798), we obtain a palindrome (9999).

The spelling of 89797 in words is "eighty-nine thousand, seven hundred ninety-seven".