999966000289 has 3 divisors (see below), whose sum is σ = 999967000273. Its totient is φ = 999965000306.

The previous prime is 999966000263. The next prime is 999966000317. The reversal of 999966000289 is 982000669999.

The square root of 999966000289 is 999983.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 999966000289 - 2¹⁵ = 999965967521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999966000239) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 499992 + ... + 1499974.

Almost surely, 2^999966000289 is an apocalyptic number.

999966000289 is the 999983-rd square number.

999966000289 is the 499992-nd centered octagonal number.

It is an amenable number.

999966000289 is a deficient number, since it is larger than the sum of its proper divisors (999984).

999966000289 is an frugal number, since it uses more digits than its factorization.

999966000289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999966 (or 999983 counting only the distinct ones).

The product of its (nonzero) digits is 34012224, while the sum is 67.

The spelling of 999966000289 in words is "nine hundred ninety-nine billion, nine hundred sixty-six million, two hundred eighty-nine", and thus it is an aban number.