1296989413 has 2 divisors, whose sum is σ = 1296989414. Its totient is φ = 1296989412.

The previous prime is 1296989363. The next prime is 1296989437. The reversal of 1296989413 is 3149896921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 925193889 + 371795524 = 30417^2 + 19282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1296989413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1296989443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648494706 + 648494707.

It is an arithmetic number, because the mean of its divisors is an integer number (648494707).

Almost surely, 2^1296989413 is an apocalyptic number.

It is an amenable number.

1296989413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296989413 is an equidigital number, since it uses as much as digits as its factorization.

1296989413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 52.

The square root of 1296989413 is about 36013.7392254678. The cubic root of 1296989413 is about 1090.5497361635.

The spelling of 1296989413 in words is "one billion, two hundred ninety-six million, nine hundred eighty-nine thousand, four hundred thirteen".