12198499 has 2 divisors, whose sum is σ = 12198500. Its totient is φ = 12198498.

The previous prime is 12198479. The next prime is 12198509. The reversal of 12198499 is 99489121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12198499 - 2⁵ = 12198467 is a prime.

It is not a weakly prime, because it can be changed into another prime (12198479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6099249 + 6099250.

It is an arithmetic number, because the mean of its divisors is an integer number (6099250).

Almost surely, 2^12198499 is an apocalyptic number.

12198499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12198499 is an equidigital number, since it uses as much as digits as its factorization.

12198499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 43.

The square root of 12198499 is about 3492.6349651803. The cubic root of 12198499 is about 230.1983103753.

The spelling of 12198499 in words is "twelve million, one hundred ninety-eight thousand, four hundred ninety-nine".