210199289 has 2 divisors, whose sum is σ = 210199290. Its totient is φ = 210199288.

The previous prime is 210199247. The next prime is 210199307. The reversal of 210199289 is 982991012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126787600 + 83411689 = 11260^2 + 9133^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210199289 is a prime.

It is a super-2 number, since 2×210199289² = 88367482192211042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210199889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105099644 + 105099645.

It is an arithmetic number, because the mean of its divisors is an integer number (105099645).

Almost surely, 2^210199289 is an apocalyptic number.

It is an amenable number.

210199289 is a deficient number, since it is larger than the sum of its proper divisors (1).

210199289 is an equidigital number, since it uses as much as digits as its factorization.

210199289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 210199289 is about 14498.2512393737. The cubic root of 210199289 is about 594.5801609503.

The spelling of 210199289 in words is "two hundred ten million, one hundred ninety-nine thousand, two hundred eighty-nine".