12890739 has 4 divisors (see below), whose sum is σ = 17187656. Its totient is φ = 8593824.

The previous prime is 12890729. The next prime is 12890753. The reversal of 12890739 is 93709821.

12890739 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: 93709821 = 3 ⋅31236607.

It is not a de Polignac number, because 12890739 - 2⁴ = 12890723 is a prime.

It is a super-2 number, since 2×12890739² = 332342303932242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12890697 and 12890706.

It is not an unprimeable number, because it can be changed into a prime (12890729) 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, 2148454 + ... + 2148459.

It is an arithmetic number, because the mean of its divisors is an integer number (4296914).

Almost surely, 2^12890739 is an apocalyptic number.

12890739 is a deficient number, since it is larger than the sum of its proper divisors (4296917).

12890739 is an equidigital number, since it uses as much as digits as its factorization.

12890739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296916.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 12890739 is about 3590.3675299334. The cubic root of 12890739 is about 234.4728731144.

The spelling of 12890739 in words is "twelve million, eight hundred ninety thousand, seven hundred thirty-nine".