2609472889 has 9 divisors (see below), whose sum is σ = 2729089839. Its totient is φ = 2494893720.

The previous prime is 2609472857. The next prime is 2609472917. The reversal of 2609472889 is 9882749062.

The square root of 2609472889 is 51083.

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

It can be written as a sum of positive squares in only one way, i.e., 1769632489 + 839840400 = 42067^2 + 28980^2 .

It is not a de Polignac number, because 2609472889 - 2⁵ = 2609472857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2609472389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1173799 + ... + 1176019.

Almost surely, 2^2609472889 is an apocalyptic number.

2609472889 is the 51083-rd square number.

2609472889 is the 25542-nd centered octagonal number.

It is an amenable number.

2609472889 is a deficient number, since it is larger than the sum of its proper divisors (119616950).

2609472889 is an frugal number, since it uses more digits than its factorization.

2609472889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4488 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The cubic root of 2609472889 is about 1376.7368269608.

The spelling of 2609472889 in words is "two billion, six hundred nine million, four hundred seventy-two thousand, eight hundred eighty-nine".