12395261939 has 2 divisors, whose sum is σ = 12395261940. Its totient is φ = 12395261938.

The previous prime is 12395261927. The next prime is 12395261981. The reversal of 12395261939 is 93916259321.

It is a weak prime.

It is an emirp because it is prime and its reverse (93916259321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12395261939 - 2¹² = 12395257843 is a prime.

It is not a weakly prime, because it can be changed into another prime (12395261999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6197630969 + 6197630970.

It is an arithmetic number, because the mean of its divisors is an integer number (6197630970).

Almost surely, 2^12395261939 is an apocalyptic number.

12395261939 is a deficient number, since it is larger than the sum of its proper divisors (1).

12395261939 is an equidigital number, since it uses as much as digits as its factorization.

12395261939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 50.

The spelling of 12395261939 in words is "twelve billion, three hundred ninety-five million, two hundred sixty-one thousand, nine hundred thirty-nine".