78089 has 8 divisors (see below), whose sum is σ = 88320. Its totient is φ = 68400.

The previous prime is 78079. The next prime is 78101. The reversal of 78089 is 98087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78089 - 2¹⁶ = 12553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227 + ... + 455.

It is an arithmetic number, because the mean of its divisors is an integer number (11040).

2⁷⁸⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

78089 is a deficient number, since it is larger than the sum of its proper divisors (10231).

78089 is a wasteful number, since it uses less digits than its factorization.

78089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 78089 is about 279.4440910093. Note that the first 3 decimals coincide. The cubic root of 78089 is about 42.7428313504.

The spelling of 78089 in words is "seventy-eight thousand, eighty-nine".