289999999999 has 8 divisors (see below), whose sum is σ = 290152890720. Its totient is φ = 289847157600.

The previous prime is 289999999987. The next prime is 290000000023. The reversal of 289999999999 is 999999999982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 289999999999 - 2¹¹ = 289999997951 is a prime.

It is a super-9 number, since 9×289999999999⁹ (a number of 105 digits) contains 999999999 as substring.

It is a Duffinian number.

289999999999 is a modest number, since divided by 999999 gives 289999 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289999999699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18688654 + ... + 18704164.

It is an arithmetic number, because the mean of its divisors is an integer number (36269111340).

Almost surely, 2^289999999999 is an apocalyptic number.

289999999999 is a deficient number, since it is larger than the sum of its proper divisors (152890721).

289999999999 is a wasteful number, since it uses less digits than its factorization.

289999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24161.

The product of its digits is 55788550416, while the sum is 100.

It can be divided in two parts, 28 and 9999999999, that multiplied together give a palindrome (279999999972).

The spelling of 289999999999 in words is "two hundred eighty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".