4066889322409 has 3 divisors (see below), whose sum is σ = 4066891339063. Its totient is φ = 4066887305756.

The previous prime is 4066889322383. The next prime is 4066889322449. The reversal of 4066889322409 is 9042239886604.

The square root of 4066889322409 is 2016653.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 4019202992025 + 47686330384 = 2004795^2 + 218372^2 .

It is not a de Polignac number, because 4066889322409 - 2⁷ = 4066889322281 is a prime.

It is a super-3 number, since 3×4066889322409³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4066889322449) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1008327 + ... + 3024979.

Almost surely, 2^{4066889322409} is an apocalyptic number.

4066889322409 is the 2016653-rd square number.

4066889322409 is the 1008327-th centered octagonal number.

It is an amenable number.

4066889322409 is a deficient number, since it is larger than the sum of its proper divisors (2016654).

4066889322409 is an frugal number, since it uses more digits than its factorization.

4066889322409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033306 (or 2016653 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 61.

The spelling of 4066889322409 in words is "four trillion, sixty-six billion, eight hundred eighty-nine million, three hundred twenty-two thousand, four hundred nine".