12239487 has 24 divisors (see below), whose sum is σ = 19182800. Its totient is φ = 7519824.

The previous prime is 12239453. The next prime is 12239509. The reversal of 12239487 is 78493221.

It is not a de Polignac number, because 12239487 - 2¹¹ = 12237439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12239407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19464 + ... + 20082.

Almost surely, 2^12239487 is an apocalyptic number.

12239487 is a deficient number, since it is larger than the sum of its proper divisors (6943313).

12239487 is an equidigital number, since it uses as much as digits as its factorization.

12239487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 635 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 12239487 is about 3498.4978204938. The cubic root of 12239487 is about 230.4558508085.

The spelling of 12239487 in words is "twelve million, two hundred thirty-nine thousand, four hundred eighty-seven".