2789013889 has 4 divisors (see below), whose sum is σ = 2857038660. Its totient is φ = 2720989120.

The previous prime is 2789013883. The next prime is 2789013911. The reversal of 2789013889 is 9883109872.

2789013889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65739664 + 2723274225 = 8108^2 + 52185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2789013889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2789013883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34012324 + ... + 34012405.

It is an arithmetic number, because the mean of its divisors is an integer number (714259665).

Almost surely, 2^2789013889 is an apocalyptic number.

It is an amenable number.

2789013889 is a deficient number, since it is larger than the sum of its proper divisors (68024771).

2789013889 is an equidigital number, since it uses as much as digits as its factorization.

2789013889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68024770.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 2789013889 is about 52811.1152031464. The cubic root of 2789013889 is about 1407.6139396060.

The spelling of 2789013889 in words is "two billion, seven hundred eighty-nine million, thirteen thousand, eight hundred eighty-nine".