13349869 has 4 divisors (see below), whose sum is σ = 14376796. Its totient is φ = 12322944.

The previous prime is 13349857. The next prime is 13349893. The reversal of 13349869 is 96894331.

13349869 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96894331 = 23 ⋅4212797.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 6786025 = 2562^2 + 2605^2 .

It is a cyclic number.

It is not a de Polignac number, because 13349869 - 2⁷ = 13349741 is a prime.

It is a super-2 number, since 2×13349869² = 356438004634322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13349849) 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, 513444 + ... + 513469.

It is an arithmetic number, because the mean of its divisors is an integer number (3594199).

Almost surely, 2^13349869 is an apocalyptic number.

It is an amenable number.

13349869 is a deficient number, since it is larger than the sum of its proper divisors (1026927).

13349869 is a wasteful number, since it uses less digits than its factorization.

13349869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026926.

The product of its digits is 139968, while the sum is 43.

The square root of 13349869 is about 3653.7472545320. The cubic root of 13349869 is about 237.2242058075.

The spelling of 13349869 in words is "thirteen million, three hundred forty-nine thousand, eight hundred sixty-nine".