19982099 has 2 divisors, whose sum is σ = 19982100. Its totient is φ = 19982098.

The previous prime is 19982093. The next prime is 19982107. The reversal of 19982099 is 99028991.

It is a weak prime.

It is an emirp because it is prime and its reverse (99028991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19982099 is a prime.

It is a super-4 number, since 4×19982099⁴ (a number of 30 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19982093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991049 + 9991050.

It is an arithmetic number, because the mean of its divisors is an integer number (9991050).

Almost surely, 2^19982099 is an apocalyptic number.

19982099 is a deficient number, since it is larger than the sum of its proper divisors (1).

19982099 is an equidigital number, since it uses as much as digits as its factorization.

19982099 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 19982099 is about 4470.1341143192. The cubic root of 19982099 is about 271.3607528361.

The spelling of 19982099 in words is "nineteen million, nine hundred eighty-two thousand, ninety-nine".