12937139 has 2 divisors, whose sum is σ = 12937140. Its totient is φ = 12937138.

The previous prime is 12937069. The next prime is 12937151. The reversal of 12937139 is 93173921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12937139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12937099 and 12937108.

It is not a weakly prime, because it can be changed into another prime (12937739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6468569 + 6468570.

It is an arithmetic number, because the mean of its divisors is an integer number (6468570).

Almost surely, 2^12937139 is an apocalyptic number.

12937139 is a deficient number, since it is larger than the sum of its proper divisors (1).

12937139 is an equidigital number, since it uses as much as digits as its factorization.

12937139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 35.

The square root of 12937139 is about 3596.8234596655. The cubic root of 12937139 is about 234.7538633089.

The spelling of 12937139 in words is "twelve million, nine hundred thirty-seven thousand, one hundred thirty-nine".