12397477 has 2 divisors, whose sum is σ = 12397478. Its totient is φ = 12397476.

The previous prime is 12397453. The next prime is 12397487. The reversal of 12397477 is 77479321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12397441 + 36 = 3521^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 12397477 - 2²³ = 4008869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12397417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6198738 + 6198739.

It is an arithmetic number, because the mean of its divisors is an integer number (6198739).

Almost surely, 2^12397477 is an apocalyptic number.

It is an amenable number.

12397477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12397477 is an equidigital number, since it uses as much as digits as its factorization.

12397477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 40.

The square root of 12397477 is about 3521.0051121803. The cubic root of 12397477 is about 231.4432062475.

The spelling of 12397477 in words is "twelve million, three hundred ninety-seven thousand, four hundred seventy-seven".