13323749 has 2 divisors, whose sum is σ = 13323750. Its totient is φ = 13323748.

The previous prime is 13323721. The next prime is 13323757. The reversal of 13323749 is 94732331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11607649 + 1716100 = 3407^2 + 1310^2 .

It is a cyclic number.

It is not a de Polignac number, because 13323749 - 2¹⁶ = 13258213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13323719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6661874 + 6661875.

It is an arithmetic number, because the mean of its divisors is an integer number (6661875).

Almost surely, 2^13323749 is an apocalyptic number.

It is an amenable number.

13323749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13323749 is an equidigital number, since it uses as much as digits as its factorization.

13323749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 13323749 is about 3650.1710918805. The cubic root of 13323749 is about 237.0693892615.

The spelling of 13323749 in words is "thirteen million, three hundred twenty-three thousand, seven hundred forty-nine".