89399 has 2 divisors, whose sum is σ = 89400.
Its totient is φ = 89398.
The previous prime is 89393. The next prime is 89413. The reversal of 89399 is 99398.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 89399 - 212 = 85303 is a prime.
It is a Sophie Germain prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (89393) 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 as a sum of consecutive naturals, namely, 44699 + 44700.
It is an arithmetic number, because the mean of its divisors is an integer number (44700).
289399 is an apocalyptic number.
89399 is a deficient number, since it is larger than the sum of its proper divisors (1).
89399 is an equidigital number, since it uses as much as digits as its factorization.
89399 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 17496, while the sum is 38.
The square root of 89399 is about 298.9966554997.
The cubic root of 89399 is about 44.7140718458.
Subtracting 89399 from its reverse (99398), we obtain a palindrome (9999).
It can be divided in two parts, 89 and 399, that multiplied together give a triangular number (35511 = T266).
The spelling of 89399 in words is "eighty-nine thousand, three hundred ninety-nine".