12700439 has 4 divisors (see below), whose sum is σ = 13252656. Its totient is φ = 12148224.

The previous prime is 12700397. The next prime is 12700451. The reversal of 12700439 is 93400721.

12700439 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 an emirpimes, since its reverse is a distinct semiprime: 93400721 = 577 ⋅161873.

It is a cyclic number.

It is not a de Polignac number, because 12700439 - 2²⁰ = 11651863 is a prime.

It is a super-2 number, since 2×12700439² = 322602301585442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12700469) 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, 276074 + ... + 276119.

It is an arithmetic number, because the mean of its divisors is an integer number (3313164).

Almost surely, 2^12700439 is an apocalyptic number.

12700439 is a deficient number, since it is larger than the sum of its proper divisors (552217).

12700439 is an equidigital number, since it uses as much as digits as its factorization.

12700439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552216.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12700439 is about 3563.7675288941. The cubic root of 12700439 is about 233.3133436390.

The spelling of 12700439 in words is "twelve million, seven hundred thousand, four hundred thirty-nine".