200973209 has 2 divisors, whose sum is σ = 200973210. Its totient is φ = 200973208.

The previous prime is 200973173. The next prime is 200973247. The reversal of 200973209 is 902379002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163763209 + 37210000 = 12797^2 + 6100^2 .

It is a cyclic number.

It is not a de Polignac number, because 200973209 - 2¹⁶ = 200907673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (209973209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100486604 + 100486605.

It is an arithmetic number, because the mean of its divisors is an integer number (100486605).

Almost surely, 2^200973209 is an apocalyptic number.

It is an amenable number.

200973209 is a deficient number, since it is larger than the sum of its proper divisors (1).

200973209 is an equidigital number, since it uses as much as digits as its factorization.

200973209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 200973209 is about 14176.5020015517. The cubic root of 200973209 is about 585.7505733360.

The spelling of 200973209 in words is "two hundred million, nine hundred seventy-three thousand, two hundred nine".