2789635489 has 3 divisors (see below), whose sum is σ = 2789688307. Its totient is φ = 2789582672.

The previous prime is 2789635487. The next prime is 2789635493. The reversal of 2789635489 is 9845369872.

The square root of 2789635489 is 52817.

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 can be written as a sum of positive squares in only one way, i.e., 950625 + 2788684864 = 975^2 + 52808^2 .

It is not a de Polignac number, because 2789635489 - 2¹ = 2789635487 is a prime.

It is a super-2 number, since 2×2789635489² = 15564132322976538242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2789635487) 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, 26409 + ... + 79225.

Almost surely, 2^2789635489 is an apocalyptic number.

2789635489 is the 52817-th square number.

2789635489 is the 26409-th centered octagonal number.

It is an amenable number.

2789635489 is a deficient number, since it is larger than the sum of its proper divisors (52818).

2789635489 is an frugal number, since it uses more digits than its factorization.

2789635489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105634 (or 52817 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 61.

The cubic root of 2789635489 is about 1407.7185055763.

The spelling of 2789635489 in words is "two billion, seven hundred eighty-nine million, six hundred thirty-five thousand, four hundred eighty-nine".