2689444123 has 8 divisors (see below), whose sum is σ = 2782298592. Its totient is φ = 2597651136.

The previous prime is 2689444111. The next prime is 2689444133. The reversal of 2689444123 is 3214449862.

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 2689444123 - 2⁹ = 2689443611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2689444123.

It is not an unprimeable number, because it can be changed into a prime (2689444133) 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, 260215 + ... + 270352.

It is an arithmetic number, because the mean of its divisors is an integer number (347787324).

Almost surely, 2^2689444123 is an apocalyptic number.

2689444123 is a deficient number, since it is larger than the sum of its proper divisors (92854469).

2689444123 is a wasteful number, since it uses less digits than its factorization.

2689444123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530741.

The product of its digits is 331776, while the sum is 43.

The square root of 2689444123 is about 51859.8507807340. The cubic root of 2689444123 is about 1390.6596118898.

It can be divided in two parts, 26894 and 44123, that added together give a palindrome (71017).

The spelling of 2689444123 in words is "two billion, six hundred eighty-nine million, four hundred forty-four thousand, one hundred twenty-three".