12611939 has 2 divisors, whose sum is σ = 12611940. Its totient is φ = 12611938.

The previous prime is 12611927. The next prime is 12611957. The reversal of 12611939 is 93911621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12611939 - 2¹² = 12607843 is a prime.

It is a super-2 number, since 2×12611939² = 318122010679442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12611999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6305969 + 6305970.

It is an arithmetic number, because the mean of its divisors is an integer number (6305970).

Almost surely, 2^12611939 is an apocalyptic number.

12611939 is a deficient number, since it is larger than the sum of its proper divisors (1).

12611939 is an equidigital number, since it uses as much as digits as its factorization.

12611939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 32.

The square root of 12611939 is about 3551.3291877831. The cubic root of 12611939 is about 232.7701503889.

The spelling of 12611939 in words is "twelve million, six hundred eleven thousand, nine hundred thirty-nine".