13319897 has 2 divisors, whose sum is σ = 13319898. Its totient is φ = 13319896.

The previous prime is 13319881. The next prime is 13319939. The reversal of 13319897 is 79891331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8462281 + 4857616 = 2909^2 + 2204^2 .

It is a cyclic number.

It is not a de Polignac number, because 13319897 - 2⁴ = 13319881 is a prime.

It is not a weakly prime, because it can be changed into another prime (13319827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6659948 + 6659949.

It is an arithmetic number, because the mean of its divisors is an integer number (6659949).

Almost surely, 2^13319897 is an apocalyptic number.

It is an amenable number.

13319897 is a deficient number, since it is larger than the sum of its proper divisors (1).

13319897 is an equidigital number, since it uses as much as digits as its factorization.

13319897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 41.

The square root of 13319897 is about 3649.6434072386. The cubic root of 13319897 is about 237.0465408549.

The spelling of 13319897 in words is "thirteen million, three hundred nineteen thousand, eight hundred ninety-seven".