12477391 has 2 divisors, whose sum is σ = 12477392. Its totient is φ = 12477390.

The previous prime is 12477373. The next prime is 12477397. The reversal of 12477391 is 19377421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12477391 - 2¹³ = 12469199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12477397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6238695 + 6238696.

It is an arithmetic number, because the mean of its divisors is an integer number (6238696).

Almost surely, 2^12477391 is an apocalyptic number.

12477391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12477391 is an equidigital number, since it uses as much as digits as its factorization.

12477391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 34.

The square root of 12477391 is about 3532.3350633823. The cubic root of 12477391 is about 231.9394349931.

The spelling of 12477391 in words is "twelve million, four hundred seventy-seven thousand, three hundred ninety-one".