104389 has 4 divisors (see below), whose sum is σ = 105280. Its totient is φ = 103500.

The previous prime is 104383. The next prime is 104393. The reversal of 104389 is 983401.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 983401 = 331 ⋅2971.

It is a cyclic number.

It is not a de Polignac number, because 104389 - 2³ = 104381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104381) 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, 237 + ... + 514.

It is an arithmetic number, because the mean of its divisors is an integer number (26320).

2¹⁰⁴³⁸⁹ is an apocalyptic number.

It is an amenable number.

104389 is a deficient number, since it is larger than the sum of its proper divisors (891).

104389 is an equidigital number, since it uses as much as digits as its factorization.

104389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 104389 is about 323.0928659070. The cubic root of 104389 is about 47.0852534437.

The spelling of 104389 in words is "one hundred four thousand, three hundred eighty-nine".