13976500409 has 2 divisors, whose sum is σ = 13976500410. Its totient is φ = 13976500408.

The previous prime is 13976500397. The next prime is 13976500441. The reversal of 13976500409 is 90400567931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13749907600 + 226592809 = 117260^2 + 15053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13976500409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13976500409.

It is not a weakly prime, because it can be changed into another prime (13976530409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6988250204 + 6988250205.

It is an arithmetic number, because the mean of its divisors is an integer number (6988250205).

Almost surely, 2^13976500409 is an apocalyptic number.

It is an amenable number.

13976500409 is a deficient number, since it is larger than the sum of its proper divisors (1).

13976500409 is an equidigital number, since it uses as much as digits as its factorization.

13976500409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 13976500409 in words is "thirteen billion, nine hundred seventy-six million, five hundred thousand, four hundred nine".