13438333 has 2 divisors, whose sum is σ = 13438334. Its totient is φ = 13438332.

The previous prime is 13438319. The next prime is 13438343. The reversal of 13438333 is 33383431.

13438333 is nontrivially palindromic in base 11.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8655364 + 4782969 = 2942^2 + 2187^2 .

It is an emirp because it is prime and its reverse (33383431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13438333 - 2¹³ = 13430141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13438303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6719166 + 6719167.

It is an arithmetic number, because the mean of its divisors is an integer number (6719167).

Almost surely, 2^13438333 is an apocalyptic number.

It is an amenable number.

13438333 is a deficient number, since it is larger than the sum of its proper divisors (1).

13438333 is an equidigital number, since it uses as much as digits as its factorization.

13438333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 28.

The square root of 13438333 is about 3665.8331931500. The cubic root of 13438333 is about 237.7470478252.

The spelling of 13438333 in words is "thirteen million, four hundred thirty-eight thousand, three hundred thirty-three".