13829569 has 4 divisors (see below), whose sum is σ = 14893396. Its totient is φ = 12765744.

The previous prime is 13829567. The next prime is 13829579. The reversal of 13829569 is 96592831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1488400 + 12341169 = 1220^2 + 3513^2 .

It is a cyclic number.

It is not a de Polignac number, because 13829569 - 2¹ = 13829567 is a prime.

It is a super-2 number, since 2×13829569² = 382513957451522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13829561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531894 + ... + 531919.

It is an arithmetic number, because the mean of its divisors is an integer number (3723349).

Almost surely, 2^13829569 is an apocalyptic number.

It is an amenable number.

13829569 is a deficient number, since it is larger than the sum of its proper divisors (1063827).

13829569 is a wasteful number, since it uses less digits than its factorization.

13829569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063826.

The product of its digits is 116640, while the sum is 43.

The square root of 13829569 is about 3718.8128482084. The cubic root of 13829569 is about 240.0322236825.

The spelling of 13829569 in words is "thirteen million, eight hundred twenty-nine thousand, five hundred sixty-nine".