13872169 has 2 divisors, whose sum is σ = 13872170. Its totient is φ = 13872168.

The previous prime is 13872137. The next prime is 13872181. The reversal of 13872169 is 96127831.

13872169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10497600 + 3374569 = 3240^2 + 1837^2 .

It is a cyclic number.

It is not a de Polignac number, because 13872169 - 2⁵ = 13872137 is a prime.

It is a super-2 number, since 2×13872169² = 384874145529122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13872569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6936084 + 6936085.

It is an arithmetic number, because the mean of its divisors is an integer number (6936085).

Almost surely, 2^13872169 is an apocalyptic number.

It is an amenable number.

13872169 is a deficient number, since it is larger than the sum of its proper divisors (1).

13872169 is an equidigital number, since it uses as much as digits as its factorization.

13872169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 13872169 is about 3724.5360784935. The cubic root of 13872169 is about 240.2784326424.

It can be divided in two parts, 13872 and 169, that added together give a palindrome (14041).

The spelling of 13872169 in words is "thirteen million, eight hundred seventy-two thousand, one hundred sixty-nine".