12299639 has 4 divisors (see below), whose sum is σ = 13417800. Its totient is φ = 11181480.

The previous prime is 12299633. The next prime is 12299647. The reversal of 12299639 is 93699221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12299639 is a prime.

It is a super-2 number, since 2×12299639² = 302562239060642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12299596 and 12299605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12299633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559064 + ... + 559085.

It is an arithmetic number, because the mean of its divisors is an integer number (3354450).

Almost surely, 2^12299639 is an apocalyptic number.

12299639 is a deficient number, since it is larger than the sum of its proper divisors (1118161).

12299639 is a wasteful number, since it uses less digits than its factorization.

12299639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118160.

The product of its digits is 52488, while the sum is 41.

The square root of 12299639 is about 3507.0841164705. The cubic root of 12299639 is about 230.8327656486.

The spelling of 12299639 in words is "twelve million, two hundred ninety-nine thousand, six hundred thirty-nine".