199000387 has 2 divisors, whose sum is σ = 199000388. Its totient is φ = 199000386.

The previous prime is 199000337. The next prime is 199000391. The reversal of 199000387 is 783000991.

It is a strong prime.

It is an emirp because it is prime and its reverse (783000991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199000387 - 2¹⁹ = 198476099 is a prime.

It is a super-2 number, since 2×199000387² = 79202308052299538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (199000327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99500193 + 99500194.

It is an arithmetic number, because the mean of its divisors is an integer number (99500194).

Almost surely, 2^199000387 is an apocalyptic number.

199000387 is a deficient number, since it is larger than the sum of its proper divisors (1).

199000387 is an equidigital number, since it uses as much as digits as its factorization.

199000387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 199000387 is about 14106.7496965105. The cubic root of 199000387 is about 583.8276245420.

The spelling of 199000387 in words is "one hundred ninety-nine million, three hundred eighty-seven", and thus it is an aban number.