13430569 has 4 divisors (see below), whose sum is σ = 13440196. Its totient is φ = 13420944.

The previous prime is 13430539. The next prime is 13430581. The reversal of 13430569 is 96503431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4460544 + 8970025 = 2112^2 + 2995^2 .

It is a cyclic number.

It is not a de Polignac number, because 13430569 - 2⁷ = 13430441 is a prime.

It is a super-2 number, since 2×13430569² = 360760367327522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13430569.

It is not an unprimeable number, because it can be changed into a prime (13430539) 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, 2274 + ... + 5659.

It is an arithmetic number, because the mean of its divisors is an integer number (3360049).

Almost surely, 2^13430569 is an apocalyptic number.

It is an amenable number.

13430569 is a deficient number, since it is larger than the sum of its proper divisors (9627).

13430569 is an equidigital number, since it uses as much as digits as its factorization.

13430569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 13430569 is about 3664.7740721632. The cubic root of 13430569 is about 237.7012528674.

It can be divided in two parts, 134 and 30569, that added together give a palindrome (30703).

The spelling of 13430569 in words is "thirteen million, four hundred thirty thousand, five hundred sixty-nine".