720283909 has 2 divisors, whose sum is σ = 720283910. Its totient is φ = 720283908.

The previous prime is 720283903. The next prime is 720283937. The reversal of 720283909 is 909382027.

720283909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 673402500 + 46881409 = 25950^2 + 6847^2 .

It is a cyclic number.

It is not a de Polignac number, because 720283909 - 2¹⁷ = 720152837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720283903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360141954 + 360141955.

It is an arithmetic number, because the mean of its divisors is an integer number (360141955).

Almost surely, 2^720283909 is an apocalyptic number.

It is an amenable number.

720283909 is a deficient number, since it is larger than the sum of its proper divisors (1).

720283909 is an equidigital number, since it uses as much as digits as its factorization.

720283909 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 720283909 is about 26838.1055404438. The cubic root of 720283909 is about 896.3987404175.

The spelling of 720283909 in words is "seven hundred twenty million, two hundred eighty-three thousand, nine hundred nine".