12239977 has 2 divisors, whose sum is σ = 12239978. Its totient is φ = 12239976.

The previous prime is 12239959. The next prime is 12239989. The reversal of 12239977 is 77993221.

12239977 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10949481 + 1290496 = 3309^2 + 1136^2 .

It is a cyclic number.

It is not a de Polignac number, because 12239977 - 2²³ = 3851369 is a prime.

It is not a weakly prime, because it can be changed into another prime (12239957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6119988 + 6119989.

It is an arithmetic number, because the mean of its divisors is an integer number (6119989).

Almost surely, 2^12239977 is an apocalyptic number.

It is an amenable number.

12239977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12239977 is an equidigital number, since it uses as much as digits as its factorization.

12239977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 40.

The square root of 12239977 is about 3498.5678498494. The cubic root of 12239977 is about 230.4589261514.

The spelling of 12239977 in words is "twelve million, two hundred thirty-nine thousand, nine hundred seventy-seven".