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199882387 is a prime number
BaseRepresentation
bin10111110100111…
…11011010010011
3111221010002002101
423322133122103
5402132214022
631500101231
74644654325
oct1372373223
9457102071
10199882387
11a2912661
1256b34817
1332545903
141c791615
1512834627
hexbe9f693

199882387 has 2 divisors, whose sum is σ = 199882388. Its totient is φ = 199882386.

The previous prime is 199882363. The next prime is 199882391. The reversal of 199882387 is 783288991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199882387 - 223 = 191493779 is a prime.

It is not a weakly prime, because it can be changed into another prime (199882357) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99941193 + 99941194.

It is an arithmetic number, because the mean of its divisors is an integer number (99941194).

Almost surely, 2199882387 is an apocalyptic number.

199882387 is a deficient number, since it is larger than the sum of its proper divisors (1).

199882387 is an equidigital number, since it uses as much as digits as its factorization.

199882387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 55.

The square root of 199882387 is about 14137.9767647284. The cubic root of 199882387 is about 584.6888909984.

The spelling of 199882387 in words is "one hundred ninety-nine million, eight hundred eighty-two thousand, three hundred eighty-seven".