12516379 has 2 divisors, whose sum is σ = 12516380. Its totient is φ = 12516378.

The previous prime is 12516373. The next prime is 12516389. The reversal of 12516379 is 97361521.

It is a weak prime.

It is an emirp because it is prime and its reverse (97361521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12516379 - 2¹³ = 12508187 is a prime.

It is not a weakly prime, because it can be changed into another prime (12516373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258189 + 6258190.

It is an arithmetic number, because the mean of its divisors is an integer number (6258190).

Almost surely, 2^12516379 is an apocalyptic number.

12516379 is a deficient number, since it is larger than the sum of its proper divisors (1).

12516379 is an equidigital number, since it uses as much as digits as its factorization.

12516379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 12516379 is about 3537.8494880365. The cubic root of 12516379 is about 232.1807635502.

The spelling of 12516379 in words is "twelve million, five hundred sixteen thousand, three hundred seventy-nine".