13424433397 has 2 divisors, whose sum is σ = 13424433398. Its totient is φ = 13424433396.

The previous prime is 13424433383. The next prime is 13424433427. The reversal of 13424433397 is 79333442431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6764404516 + 6660028881 = 82246^2 + 81609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13424433397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13424433307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6712216698 + 6712216699.

It is an arithmetic number, because the mean of its divisors is an integer number (6712216699).

Almost surely, 2^13424433397 is an apocalyptic number.

It is an amenable number.

13424433397 is a deficient number, since it is larger than the sum of its proper divisors (1).

13424433397 is an equidigital number, since it uses as much as digits as its factorization.

13424433397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 43.

The spelling of 13424433397 in words is "thirteen billion, four hundred twenty-four million, four hundred thirty-three thousand, three hundred ninety-seven".