12089999 has 2 divisors, whose sum is σ = 12090000. Its totient is φ = 12089998.

The previous prime is 12089993. The next prime is 12090011. The reversal of 12089999 is 99998021.

It is a weak prime.

It is an emirp because it is prime and its reverse (99998021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12089999 - 2¹² = 12085903 is a prime.

It is a Sophie Germain prime.

12089999 is a modest number, since divided by 9999 gives 1208 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12089993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6044999 + 6045000.

It is an arithmetic number, because the mean of its divisors is an integer number (6045000).

Almost surely, 2^12089999 is an apocalyptic number.

12089999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12089999 is an equidigital number, since it uses as much as digits as its factorization.

12089999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 12089999 is about 3477.0675863434. The cubic root of 12089999 is about 229.5137743436.

The spelling of 12089999 in words is "twelve million, eighty-nine thousand, nine hundred ninety-nine".