12838465 has 4 divisors (see below), whose sum is σ = 15406164. Its totient is φ = 10270768.

The previous prime is 12838429. The next prime is 12838477. The reversal of 12838465 is 56483821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56483821 = 6007 ⋅9403.

It can be written as a sum of positive squares in 2 ways, for example, as 4704561 + 8133904 = 2169^2 + 2852^2 .

It is a cyclic number.

It is not a de Polignac number, because 12838465 - 2⁷ = 12838337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1283842 + ... + 1283851.

It is an arithmetic number, because the mean of its divisors is an integer number (3851541).

Almost surely, 2^12838465 is an apocalyptic number.

It is an amenable number.

12838465 is a deficient number, since it is larger than the sum of its proper divisors (2567699).

12838465 is an equidigital number, since it uses as much as digits as its factorization.

12838465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567698.

The product of its digits is 46080, while the sum is 37.

The square root of 12838465 is about 3583.0803786686. The cubic root of 12838465 is about 234.1555021139.

The spelling of 12838465 in words is "twelve million, eight hundred thirty-eight thousand, four hundred sixty-five".