19982899 has 2 divisors, whose sum is σ = 19982900. Its totient is φ = 19982898.

The previous prime is 19982891. The next prime is 19982933. The reversal of 19982899 is 99828991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19982899 - 2³ = 19982891 is a prime.

It is a super-4 number, since 4×19982899⁴ (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 (19982891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991449 + 9991450.

It is an arithmetic number, because the mean of its divisors is an integer number (9991450).

Almost surely, 2^19982899 is an apocalyptic number.

19982899 is a deficient number, since it is larger than the sum of its proper divisors (1).

19982899 is an equidigital number, since it uses as much as digits as its factorization.

19982899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 55.

The square root of 19982899 is about 4470.2235961974. The cubic root of 19982899 is about 271.3643741725.

The spelling of 19982899 in words is "nineteen million, nine hundred eighty-two thousand, eight hundred ninety-nine".