999998881199 has 2 divisors, whose sum is σ = 999998881200. Its totient is φ = 999998881198.

The previous prime is 999998881177. The next prime is 999998881213. The reversal of 999998881199 is 991188899999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999998881199 - 2⁸ = 999998880943 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999998881169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999440599 + 499999440600.

It is an arithmetic number, because the mean of its divisors is an integer number (499999440600).

Almost surely, 2^999998881199 is an apocalyptic number.

999998881199 is a deficient number, since it is larger than the sum of its proper divisors (1).

999998881199 is an equidigital number, since it uses as much as digits as its factorization.

999998881199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2448880128, while the sum is 89.

The spelling of 999998881199 in words is "nine hundred ninety-nine billion, nine hundred ninety-eight million, eight hundred eighty-one thousand, one hundred ninety-nine".