13438447 has 16 divisors (see below), whose sum is σ = 15240960. Its totient is φ = 11742400.

The previous prime is 13438441. The next prime is 13438507. The reversal of 13438447 is 74483431.

It is not a de Polignac number, because 13438447 - 2⁷ = 13438319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37254 + ... + 37612.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^13438447 is an apocalyptic number.

13438447 is a deficient number, since it is larger than the sum of its proper divisors (1802513).

13438447 is a wasteful number, since it uses less digits than its factorization.

13438447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494.

The product of its digits is 32256, while the sum is 34.

The square root of 13438447 is about 3665.8487421060. The cubic root of 13438447 is about 237.7477201082.

It can be divided in two parts, 134384 and 47, that added together give a palindrome (134431).

The spelling of 13438447 in words is "thirteen million, four hundred thirty-eight thousand, four hundred forty-seven".