13801309 has 2 divisors, whose sum is σ = 13801310. Its totient is φ = 13801308.

The previous prime is 13801301. The next prime is 13801313. The reversal of 13801309 is 90310831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7784100 + 6017209 = 2790^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 13801309 - 2³ = 13801301 is a prime.

It is a super-2 number, since 2×13801309² = 380952260226962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13801301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6900654 + 6900655.

It is an arithmetic number, because the mean of its divisors is an integer number (6900655).

Almost surely, 2^13801309 is an apocalyptic number.

It is an amenable number.

13801309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13801309 is an equidigital number, since it uses as much as digits as its factorization.

13801309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 13801309 is about 3715.0113055010. The cubic root of 13801309 is about 239.8686144300.

The spelling of 13801309 in words is "thirteen million, eight hundred one thousand, three hundred nine".