199987301 has 2 divisors, whose sum is σ = 199987302. Its totient is φ = 199987300.

The previous prime is 199987297. The next prime is 199987321. The reversal of 199987301 is 103789991.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188925025 + 11062276 = 13745^2 + 3326^2 .

It is a cyclic number.

It is not a de Polignac number, because 199987301 - 2² = 199987297 is a prime.

It is a super-2 number, since 2×199987301² = 79989841122529202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199987321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99993650 + 99993651.

It is an arithmetic number, because the mean of its divisors is an integer number (99993651).

Almost surely, 2^199987301 is an apocalyptic number.

It is an amenable number.

199987301 is a deficient number, since it is larger than the sum of its proper divisors (1).

199987301 is an equidigital number, since it uses as much as digits as its factorization.

199987301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 199987301 is about 14141.6866391531. The cubic root of 199987301 is about 584.7911700135.

The spelling of 199987301 in words is "one hundred ninety-nine million, nine hundred eighty-seven thousand, three hundred one".