199886501 has 2 divisors, whose sum is σ = 199886502. Its totient is φ = 199886500.

The previous prime is 199886497. The next prime is 199886507. The reversal of 199886501 is 105688991.

199886501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198077476 + 1809025 = 14074^2 + 1345^2 .

It is an emirp because it is prime and its reverse (105688991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199886501 - 2² = 199886497 is a prime.

It is a super-2 number, since 2×199886501² = 79909226564046002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199886507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99943250 + 99943251.

It is an arithmetic number, because the mean of its divisors is an integer number (99943251).

Almost surely, 2^199886501 is an apocalyptic number.

It is an amenable number.

199886501 is a deficient number, since it is larger than the sum of its proper divisors (1).

199886501 is an equidigital number, since it uses as much as digits as its factorization.

199886501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 199886501 is about 14138.1222586311. The cubic root of 199886501 is about 584.6929023466.

The spelling of 199886501 in words is "one hundred ninety-nine million, eight hundred eighty-six thousand, five hundred one".