13320397 has 2 divisors, whose sum is σ = 13320398. Its totient is φ = 13320396.

The previous prime is 13320389. The next prime is 13320409. The reversal of 13320397 is 79302331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 2653641 = 3266^2 + 1629^2 .

It is a cyclic number.

It is not a de Polignac number, because 13320397 - 2³ = 13320389 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 (13321397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660198 + 6660199.

It is an arithmetic number, because the mean of its divisors is an integer number (6660199).

Almost surely, 2^13320397 is an apocalyptic number.

It is an amenable number.

13320397 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320397 is an equidigital number, since it uses as much as digits as its factorization.

13320397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 13320397 is about 3649.7119064386. The cubic root of 13320397 is about 237.0495068885.

The spelling of 13320397 in words is "thirteen million, three hundred twenty thousand, three hundred ninety-seven".