2684879289 has 6 divisors (see below), whose sum is σ = 3878158986. Its totient is φ = 1789919520.

The previous prime is 2684879261. The next prime is 2684879291. The reversal of 2684879289 is 9829784862.

2684879289 is a `hidden beast` number, since 2 + 68 + 487 + 92 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2257010064 + 427869225 = 47508^2 + 20685^2 .

It is not a de Polignac number, because 2684879289 - 2¹⁷ = 2684748217 is a prime.

It is a super-2 number, since 2×2684879289² = 14417153593002291042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2684879489) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 149159952 + ... + 149159969.

It is an arithmetic number, because the mean of its divisors is an integer number (646359831).

Almost surely, 2^2684879289 is an apocalyptic number.

It is an amenable number.

2684879289 is a deficient number, since it is larger than the sum of its proper divisors (1193279697).

2684879289 is a wasteful number, since it uses less digits than its factorization.

2684879289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298319927 (or 298319924 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The square root of 2684879289 is about 51815.8208368834. The cubic root of 2684879289 is about 1389.8723704908.

The spelling of 2684879289 in words is "two billion, six hundred eighty-four million, eight hundred seventy-nine thousand, two hundred eighty-nine".