2689229809 has 12 divisors (see below), whose sum is σ = 3292935600. Its totient is φ = 2183734728.

The previous prime is 2689229801. The next prime is 2689229821. The reversal of 2689229809 is 9089229862.

It is not a de Polignac number, because 2689229809 - 2³ = 2689229801 is a prime.

It is a super-2 number, since 2×2689229809² = 14463913931228352962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2689229809.

It is not an unprimeable number, because it can be changed into a prime (2689229801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1443339 + ... + 1445200.

It is an arithmetic number, because the mean of its divisors is an integer number (274411300).

Almost surely, 2^2689229809 is an apocalyptic number.

It is an amenable number.

2689229809 is a deficient number, since it is larger than the sum of its proper divisors (603705791).

2689229809 is a wasteful number, since it uses less digits than its factorization.

2689229809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888572 (or 2888565 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 55.

The square root of 2689229809 is about 51857.7844590376. The cubic root of 2689229809 is about 1390.6226716985.

The spelling of 2689229809 in words is "two billion, six hundred eighty-nine million, two hundred twenty-nine thousand, eight hundred nine".