2005006789 has 4 divisors (see below), whose sum is σ = 2015082400. Its totient is φ = 1994931180.

The previous prime is 2005006777. The next prime is 2005006811. The reversal of 2005006789 is 9876005002.

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 a cyclic number.

It is not a de Polignac number, because 2005006789 - 2¹¹ = 2005004741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005006739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5037507 + ... + 5037904.

It is an arithmetic number, because the mean of its divisors is an integer number (503770600).

Almost surely, 2^2005006789 is an apocalyptic number.

It is an amenable number.

2005006789 is a deficient number, since it is larger than the sum of its proper divisors (10075611).

2005006789 is a wasteful number, since it uses less digits than its factorization.

2005006789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075610.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2005006789 is about 44777.3021630379. The cubic root of 2005006789 is about 1260.9715335991.

The spelling of 2005006789 in words is "two billion, five million, six thousand, seven hundred eighty-nine".