12423397939 has 2 divisors, whose sum is σ = 12423397940. Its totient is φ = 12423397938.

The previous prime is 12423397927. The next prime is 12423397967. The reversal of 12423397939 is 93979332421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12423397939 - 2¹¹ = 12423395891 is a prime.

It is not a weakly prime, because it can be changed into another prime (12423397739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6211698969 + 6211698970.

It is an arithmetic number, because the mean of its divisors is an integer number (6211698970).

Almost surely, 2^12423397939 is an apocalyptic number.

12423397939 is a deficient number, since it is larger than the sum of its proper divisors (1).

12423397939 is an equidigital number, since it uses as much as digits as its factorization.

12423397939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 52.

The spelling of 12423397939 in words is "twelve billion, four hundred twenty-three million, three hundred ninety-seven thousand, nine hundred thirty-nine".