13047917 has 2 divisors, whose sum is σ = 13047918. Its totient is φ = 13047916.

The previous prime is 13047893. The next prime is 13047929. The reversal of 13047917 is 71974031.

13047917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7123561 + 5924356 = 2669^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 13047917 - 2¹⁴ = 13031533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13047967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6523958 + 6523959.

It is an arithmetic number, because the mean of its divisors is an integer number (6523959).

Almost surely, 2^13047917 is an apocalyptic number.

It is an amenable number.

13047917 is a deficient number, since it is larger than the sum of its proper divisors (1).

13047917 is an equidigital number, since it uses as much as digits as its factorization.

13047917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 13047917 is about 3612.1900559079. The cubic root of 13047917 is about 235.4220091756.

The spelling of 13047917 in words is "thirteen million, forty-seven thousand, nine hundred seventeen".