12985399 has 8 divisors (see below), whose sum is σ = 15713568. Its totient is φ = 10475520.

The previous prime is 12985393. The next prime is 12985421. The reversal of 12985399 is 99358921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12985399 - 2³ = 12985391 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 (12985391) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 54442 + ... + 54679.

It is an arithmetic number, because the mean of its divisors is an integer number (1964196).

Almost surely, 2^12985399 is an apocalyptic number.

12985399 is a deficient number, since it is larger than the sum of its proper divisors (2728169).

12985399 is a wasteful number, since it uses less digits than its factorization.

12985399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109145.

The product of its digits is 174960, while the sum is 46.

The square root of 12985399 is about 3603.5259122143. The cubic root of 12985399 is about 235.0454054410.

The spelling of 12985399 in words is "twelve million, nine hundred eighty-five thousand, three hundred ninety-nine".