999559073 has 2 divisors, whose sum is σ = 999559074. Its totient is φ = 999559072.

The previous prime is 999559031. The next prime is 999559157. The reversal of 999559073 is 370955999.

999559073 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., 598878784 + 400680289 = 24472^2 + 20017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999559073 is a prime.

It is not a weakly prime, because it can be changed into another prime (999529073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499779536 + 499779537.

It is an arithmetic number, because the mean of its divisors is an integer number (499779537).

Almost surely, 2^999559073 is an apocalyptic number.

It is an amenable number.

999559073 is a deficient number, since it is larger than the sum of its proper divisors (1).

999559073 is an equidigital number, since it uses as much as digits as its factorization.

999559073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3444525, while the sum is 56.

The square root of 999559073 is about 31615.8041650058. The cubic root of 999559073 is about 999.8530027262.

The spelling of 999559073 in words is "nine hundred ninety-nine million, five hundred fifty-nine thousand, seventy-three".