13213399 has 2 divisors, whose sum is σ = 13213400. Its totient is φ = 13213398.

The previous prime is 13213391. The next prime is 13213423. The reversal of 13213399 is 99331231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13213399 - 2³ = 13213391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13213399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13213391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606699 + 6606700.

It is an arithmetic number, because the mean of its divisors is an integer number (6606700).

Almost surely, 2^13213399 is an apocalyptic number.

13213399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13213399 is an equidigital number, since it uses as much as digits as its factorization.

13213399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 31.

The square root of 13213399 is about 3635.0239338964. The cubic root of 13213399 is about 236.4130884022.

It can be divided in two parts, 132 and 13399, that added together give a palindrome (13531).

The spelling of 13213399 in words is "thirteen million, two hundred thirteen thousand, three hundred ninety-nine".