12087899 has 2 divisors, whose sum is σ = 12087900. Its totient is φ = 12087898.

The previous prime is 12087877. The next prime is 12087919. The reversal of 12087899 is 99878021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12087899 - 2¹² = 12083803 is a prime.

It is a super-2 number, since 2×12087899² = 292234604468402, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12087839) 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, 6043949 + 6043950.

It is an arithmetic number, because the mean of its divisors is an integer number (6043950).

Almost surely, 2^12087899 is an apocalyptic number.

12087899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12087899 is an equidigital number, since it uses as much as digits as its factorization.

12087899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 12087899 is about 3476.7655946296. The cubic root of 12087899 is about 229.5004849343.

The spelling of 12087899 in words is "twelve million, eighty-seven thousand, eight hundred ninety-nine".