13808869 has 2 divisors, whose sum is σ = 13808870. Its totient is φ = 13808868.

The previous prime is 13808831. The next prime is 13808887. The reversal of 13808869 is 96880831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13786369 + 22500 = 3713^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 13808869 - 2⁹ = 13808357 is a prime.

It is a super-2 number, since 2×13808869² = 381369726118322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13808969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6904434 + 6904435.

It is an arithmetic number, because the mean of its divisors is an integer number (6904435).

Almost surely, 2^13808869 is an apocalyptic number.

It is an amenable number.

13808869 is a deficient number, since it is larger than the sum of its proper divisors (1).

13808869 is an equidigital number, since it uses as much as digits as its factorization.

13808869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 13808869 is about 3716.0286597388. The cubic root of 13808869 is about 239.9124043757.

The spelling of 13808869 in words is "thirteen million, eight hundred eight thousand, eight hundred sixty-nine".