12970639 has 4 divisors (see below), whose sum is σ = 14149800. Its totient is φ = 11791480.

The previous prime is 12970583. The next prime is 12970651. The reversal of 12970639 is 93607921.

12970639 is digitally balanced in base 3, 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: 93607921 = 11 ⋅8509811.

It is a cyclic number.

It is not a de Polignac number, because 12970639 - 2⁹ = 12970127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12970598 and 12970607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12970039) 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, 589564 + ... + 589585.

It is an arithmetic number, because the mean of its divisors is an integer number (3537450).

Almost surely, 2^12970639 is an apocalyptic number.

12970639 is a deficient number, since it is larger than the sum of its proper divisors (1179161).

12970639 is a wasteful number, since it uses less digits than its factorization.

12970639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179160.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 12970639 is about 3601.4773357610. The cubic root of 12970639 is about 234.9563160087.

The spelling of 12970639 in words is "twelve million, nine hundred seventy thousand, six hundred thirty-nine".