13965169 has 9 divisors (see below), whose sum is σ = 14496321. Its totient is φ = 13453200.

The previous prime is 13965151. The next prime is 13965179. The reversal of 13965169 is 96156931.

The square root of 13965169 is 3737.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10400625 + 3564544 = 3225^2 + 1888^2 .

It is not a de Polignac number, because 13965169 - 2¹³ = 13956977 is a prime.

It is a super-2 number, since 2×13965169² = 390051890397122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13965139) 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 in 8 ways as a sum of consecutive naturals, for example, 138219 + ... + 138319.

Almost surely, 2^13965169 is an apocalyptic number.

13965169 is the 3737-th square number.

13965169 is the 1869-th centered octagonal number.

It is an amenable number.

13965169 is a deficient number, since it is larger than the sum of its proper divisors (531152).

13965169 is an frugal number, since it uses more digits than its factorization.

13965169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 138 counting only the distinct ones).

The product of its digits is 43740, while the sum is 40.

The cubic root of 13965169 is about 240.8141850361.

The spelling of 13965169 in words is "thirteen million, nine hundred sixty-five thousand, one hundred sixty-nine".