2667209889 has 4 divisors (see below), whose sum is σ = 3556279856. Its totient is φ = 1778139924.

The previous prime is 2667209863. The next prime is 2667209903. The reversal of 2667209889 is 9889027662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2667209889 - 2¹⁶ = 2667144353 is a prime.

It is a super-2 number, since 2×2667209889² = 14228017183958784642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2667209819) 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 3 ways as a sum of consecutive naturals, for example, 444534979 + ... + 444534984.

It is an arithmetic number, because the mean of its divisors is an integer number (889069964).

Almost surely, 2^2667209889 is an apocalyptic number.

It is an amenable number.

2667209889 is a deficient number, since it is larger than the sum of its proper divisors (889069967).

2667209889 is an equidigital number, since it uses as much as digits as its factorization.

2667209889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889069966.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The square root of 2667209889 is about 51645.0374092226. The cubic root of 2667209889 is about 1386.8167046404.

The spelling of 2667209889 in words is "two billion, six hundred sixty-seven million, two hundred nine thousand, eight hundred eighty-nine".