2006389 has 16 divisors (see below), whose sum is σ = 2543616. Its totient is φ = 1537200.

The previous prime is 2006387. The next prime is 2006393. The reversal of 2006389 is 9836002.

It is not a de Polignac number, because 2006389 - 2¹ = 2006387 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 (2006387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5284 + ... + 5650.

It is an arithmetic number, because the mean of its divisors is an integer number (158976).

2^2006389 is an apocalyptic number.

It is an amenable number.

2006389 is a deficient number, since it is larger than the sum of its proper divisors (537227).

2006389 is a wasteful number, since it uses less digits than its factorization.

2006389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2006389 is about 1416.4706138851. The cubic root of 2006389 is about 126.1261229769.

The spelling of 2006389 in words is "two million, six thousand, three hundred eighty-nine".