199882897 has 2 divisors, whose sum is σ = 199882898. Its totient is φ = 199882896.

The previous prime is 199882883. The next prime is 199882901. The reversal of 199882897 is 798288991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198499921 + 1382976 = 14089^2 + 1176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199882897 is a prime.

It is a super-2 number, since 2×199882897² = 79906345026225218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (199882847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99941448 + 99941449.

It is an arithmetic number, because the mean of its divisors is an integer number (99941449).

Almost surely, 2^199882897 is an apocalyptic number.

It is an amenable number.

199882897 is a deficient number, since it is larger than the sum of its proper divisors (1).

199882897 is an equidigital number, since it uses as much as digits as its factorization.

199882897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 61.

The square root of 199882897 is about 14137.9948012439. The cubic root of 199882897 is about 584.6893882759.

The spelling of 199882897 in words is "one hundred ninety-nine million, eight hundred eighty-two thousand, eight hundred ninety-seven".