200009819 has 2 divisors, whose sum is σ = 200009820. Its totient is φ = 200009818.

The previous prime is 200009731. The next prime is 200009833. The reversal of 200009819 is 918900002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200009819 is a prime.

It is a super-2 number, since 2×200009819² = 80007855392825522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 200009791 and 200009800.

It is not a weakly prime, because it can be changed into another prime (200009519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100004909 + 100004910.

It is an arithmetic number, because the mean of its divisors is an integer number (100004910).

Almost surely, 2^200009819 is an apocalyptic number.

200009819 is a deficient number, since it is larger than the sum of its proper divisors (1).

200009819 is an equidigital number, since it uses as much as digits as its factorization.

200009819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 200009819 is about 14142.4827735444. The cubic root of 200009819 is about 584.8131177960.

The spelling of 200009819 in words is "two hundred million, nine thousand, eight hundred nineteen".