12985443 has 6 divisors (see below), whose sum is σ = 18756764. Its totient is φ = 8656956.

The previous prime is 12985429. The next prime is 12985447. The reversal of 12985443 is 34458921.

12985443 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 12985443 - 2⁹ = 12984931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12985398 and 12985407.

It is not an unprimeable number, because it can be changed into a prime (12985447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 721405 + ... + 721422.

Almost surely, 2^12985443 is an apocalyptic number.

12985443 is a deficient number, since it is larger than the sum of its proper divisors (5771321).

12985443 is a wasteful number, since it uses less digits than its factorization.

12985443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442833 (or 1442830 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 12985443 is about 3603.5320173408. The cubic root of 12985443 is about 235.0456709183.

The spelling of 12985443 in words is "twelve million, nine hundred eighty-five thousand, four hundred forty-three".