13309463 has 4 divisors (see below), whose sum is σ = 13768440. Its totient is φ = 12850488.

The previous prime is 13309451. The next prime is 13309493. The reversal of 13309463 is 36490331.

13309463 is digitally balanced in base 2, 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: 36490331 = 1621 ⋅22511.

It is a cyclic number.

It is not a de Polignac number, because 13309463 - 2¹⁰ = 13308439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 458947 = 13309463 / (1 + 3 + 3 + 0 + 9 + 4 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13309423) 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, 229445 + ... + 229502.

It is an arithmetic number, because the mean of its divisors is an integer number (3442110).

Almost surely, 2^13309463 is an apocalyptic number.

13309463 is a deficient number, since it is larger than the sum of its proper divisors (458977).

13309463 is an equidigital number, since it uses as much as digits as its factorization.

13309463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458976.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 13309463 is about 3648.2136724704. The cubic root of 13309463 is about 236.9846287217.

Adding to 13309463 its reverse (36490331), we get a palindrome (49799794).

The spelling of 13309463 in words is "thirteen million, three hundred nine thousand, four hundred sixty-three".