12985247 has 4 divisors (see below), whose sum is σ = 14165736. Its totient is φ = 11804760.

The previous prime is 12985223. The next prime is 12985277. The reversal of 12985247 is 74258921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74258921 = 11 ⋅6750811.

It is not a de Polignac number, because 12985247 - 2¹² = 12981151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12985247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12985277) 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, 590228 + ... + 590249.

It is an arithmetic number, because the mean of its divisors is an integer number (3541434).

Almost surely, 2^12985247 is an apocalyptic number.

12985247 is a deficient number, since it is larger than the sum of its proper divisors (1180489).

12985247 is a wasteful number, since it uses less digits than its factorization.

12985247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180488.

The product of its digits is 40320, while the sum is 38.

The square root of 12985247 is about 3603.5048216979. The cubic root of 12985247 is about 235.0444883330.

The spelling of 12985247 in words is "twelve million, nine hundred eighty-five thousand, two hundred forty-seven".