200723989 has 2 divisors, whose sum is σ = 200723990. Its totient is φ = 200723988.

The previous prime is 200723953. The next prime is 200724019. The reversal of 200723989 is 989327002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199656900 + 1067089 = 14130^2 + 1033^2 .

It is a cyclic number.

It is not a de Polignac number, because 200723989 - 2⁹ = 200723477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200723189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100361994 + 100361995.

It is an arithmetic number, because the mean of its divisors is an integer number (100361995).

Almost surely, 2^200723989 is an apocalyptic number.

It is an amenable number.

200723989 is a deficient number, since it is larger than the sum of its proper divisors (1).

200723989 is an equidigital number, since it uses as much as digits as its factorization.

200723989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 200723989 is about 14167.7093773129. The cubic root of 200723989 is about 585.5083501028.

The spelling of 200723989 in words is "two hundred million, seven hundred twenty-three thousand, nine hundred eighty-nine".