13438897 has 4 divisors (see below), whose sum is σ = 13541616. Its totient is φ = 13336180.

The previous prime is 13438889. The next prime is 13438913. The reversal of 13438897 is 79883431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13438897 - 2³ = 13438889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13438597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51163 + ... + 51424.

It is an arithmetic number, because the mean of its divisors is an integer number (3385404).

Almost surely, 2^13438897 is an apocalyptic number.

It is an amenable number.

13438897 is a deficient number, since it is larger than the sum of its proper divisors (102719).

13438897 is a wasteful number, since it uses less digits than its factorization.

13438897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102718.

The product of its digits is 145152, while the sum is 43.

The square root of 13438897 is about 3665.9101189200. The cubic root of 13438897 is about 237.7503738196.

The spelling of 13438897 in words is "thirteen million, four hundred thirty-eight thousand, eight hundred ninety-seven".