2989809769 has 2 divisors, whose sum is σ = 2989809770. Its totient is φ = 2989809768.

The previous prime is 2989809727. The next prime is 2989809793. The reversal of 2989809769 is 9679089892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2142301225 + 847508544 = 46285^2 + 29112^2 .

It is a cyclic number.

It is not a de Polignac number, because 2989809769 - 2¹⁷ = 2989678697 is a prime.

It is a super-2 number, since 2×2989809769² = 17877924909615666722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2989809469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1494904884 + 1494904885.

It is an arithmetic number, because the mean of its divisors is an integer number (1494904885).

Almost surely, 2^2989809769 is an apocalyptic number.

It is an amenable number.

2989809769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2989809769 is an equidigital number, since it uses as much as digits as its factorization.

2989809769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35271936, while the sum is 67.

The square root of 2989809769 is about 54679.1529652755. The cubic root of 2989809769 is about 1440.6147338364.

The spelling of 2989809769 in words is "two billion, nine hundred eighty-nine million, eight hundred nine thousand, seven hundred sixty-nine".