13344409 has 9 divisors (see below), whose sum is σ = 14501469. Its totient is φ = 12274080.

The previous prime is 13344407. The next prime is 13344427. The reversal of 13344409 is 90444331.

The square root of 13344409 is 3653.

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 585225 + 12759184 = 765^2 + 3572^2 .

It is not a de Polignac number, because 13344409 - 2¹ = 13344407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13344407) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 47349 + ... + 47629.

Almost surely, 2^13344409 is an apocalyptic number.

13344409 is the 3653-rd square number.

13344409 is the 1827-th centered octagonal number.

It is an amenable number.

13344409 is a deficient number, since it is larger than the sum of its proper divisors (1157060).

13344409 is an frugal number, since it uses more digits than its factorization.

13344409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The cubic root of 13344409 is about 237.1918604018.

Multiplying 13344409 by its product of nonzero digits (5184), we get a square (69177416256 = 263016²).

The spelling of 13344409 in words is "thirteen million, three hundred forty-four thousand, four hundred nine".