13852309 has 2 divisors, whose sum is σ = 13852310. Its totient is φ = 13852308.

The previous prime is 13852303. The next prime is 13852337. The reversal of 13852309 is 90325831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13764100 + 88209 = 3710^2 + 297^2 .

It is an emirp because it is prime and its reverse (90325831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13852309 - 2⁵ = 13852277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13852303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6926154 + 6926155.

It is an arithmetic number, because the mean of its divisors is an integer number (6926155).

Almost surely, 2^13852309 is an apocalyptic number.

It is an amenable number.

13852309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13852309 is an equidigital number, since it uses as much as digits as its factorization.

13852309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 13852309 is about 3721.8690197265. The cubic root of 13852309 is about 240.1637135306.

It can be divided in two parts, 13852 and 309, that added together give a square (14161 = 119²).

The spelling of 13852309 in words is "thirteen million, eight hundred fifty-two thousand, three hundred nine".