12078739 has 4 divisors (see below), whose sum is σ = 12091720. Its totient is φ = 12065760.

The previous prime is 12078727. The next prime is 12078751. The reversal of 12078739 is 93787021.

12078739 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.

It is an interprime number because it is at equal distance from previous prime (12078727) and next prime (12078751).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12078739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12078698 and 12078707.

It is not an unprimeable number, because it can be changed into a prime (12078709) 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, 4977 + ... + 6994.

It is an arithmetic number, because the mean of its divisors is an integer number (3022930).

Almost surely, 2^12078739 is an apocalyptic number.

12078739 is a deficient number, since it is larger than the sum of its proper divisors (12981).

12078739 is a wasteful number, since it uses less digits than its factorization.

12078739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12980.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 12078739 is about 3475.4480286720. The cubic root of 12078739 is about 229.4424997908.

The spelling of 12078739 in words is "twelve million, seventy-eight thousand, seven hundred thirty-nine".