13842869 has 2 divisors, whose sum is σ = 13842870. Its totient is φ = 13842868.

The previous prime is 13842859. The next prime is 13842877. The reversal of 13842869 is 96824831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13140625 + 702244 = 3625^2 + 838^2 .

It is an emirp because it is prime and its reverse (96824831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13842869 - 2⁴ = 13842853 is a prime.

It is a super-2 number, since 2×13842869² = 383250044302322, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13842809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6921434 + 6921435.

It is an arithmetic number, because the mean of its divisors is an integer number (6921435).

Almost surely, 2^13842869 is an apocalyptic number.

It is an amenable number.

13842869 is a deficient number, since it is larger than the sum of its proper divisors (1).

13842869 is an equidigital number, since it uses as much as digits as its factorization.

13842869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 13842869 is about 3720.6006235553. The cubic root of 13842869 is about 240.1091459575.

The spelling of 13842869 in words is "thirteen million, eight hundred forty-two thousand, eight hundred sixty-nine".