12087839 has 2 divisors, whose sum is σ = 12087840. Its totient is φ = 12087838.

The previous prime is 12087793. The next prime is 12087847. The reversal of 12087839 is 93878021.

12087839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (93878021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12087839 - 2¹⁶ = 12022303 is a prime.

It is a super-2 number, since 2×12087839² = 292231703379842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12087899) 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 as a sum of consecutive naturals, namely, 6043919 + 6043920.

It is an arithmetic number, because the mean of its divisors is an integer number (6043920).

Almost surely, 2^12087839 is an apocalyptic number.

12087839 is a deficient number, since it is larger than the sum of its proper divisors (1).

12087839 is an equidigital number, since it uses as much as digits as its factorization.

12087839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 12087839 is about 3476.7569659095. The cubic root of 12087839 is about 229.5001052143.

The spelling of 12087839 in words is "twelve million, eighty-seven thousand, eight hundred thirty-nine".