12519389 has 2 divisors, whose sum is σ = 12519390. Its totient is φ = 12519388.

The previous prime is 12519379. The next prime is 12519401. The reversal of 12519389 is 98391521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11276164 + 1243225 = 3358^2 + 1115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12519389 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12519349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6259694 + 6259695.

It is an arithmetic number, because the mean of its divisors is an integer number (6259695).

Almost surely, 2^12519389 is an apocalyptic number.

It is an amenable number.

12519389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12519389 is an equidigital number, since it uses as much as digits as its factorization.

12519389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 38.

The square root of 12519389 is about 3538.2748621327. The cubic root of 12519389 is about 232.1993740467.

The spelling of 12519389 in words is "twelve million, five hundred nineteen thousand, three hundred eighty-nine".