12078889 has 4 divisors (see below), whose sum is σ = 12714640. Its totient is φ = 11443140.

The previous prime is 12078883. The next prime is 12078919. The reversal of 12078889 is 98887021.

12078889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 12078889 - 2³ = 12078881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12078881) 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, 317847 + ... + 317884.

It is an arithmetic number, because the mean of its divisors is an integer number (3178660).

Almost surely, 2^12078889 is an apocalyptic number.

12078889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12078889 is a deficient number, since it is larger than the sum of its proper divisors (635751).

12078889 is an equidigital number, since it uses as much as digits as its factorization.

12078889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635750.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 12078889 is about 3475.4696085565. The cubic root of 12078889 is about 229.4434495652.

The spelling of 12078889 in words is "twelve million, seventy-eight thousand, eight hundred eighty-nine".