2009389 has 8 divisors (see below), whose sum is σ = 2115072. Its totient is φ = 1906320.

The previous prime is 2009387. The next prime is 2009393. The reversal of 2009389 is 9839002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2009389 - 2¹ = 2009387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2009389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032 + ... + 2254.

It is an arithmetic number, because the mean of its divisors is an integer number (264384).

2^2009389 is an apocalyptic number.

It is an amenable number.

2009389 is a deficient number, since it is larger than the sum of its proper divisors (105683).

2009389 is a wasteful number, since it uses less digits than its factorization.

2009389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2009389 is about 1417.5291884120. The cubic root of 2009389 is about 126.1889539199.

The spelling of 2009389 in words is "two million, nine thousand, three hundred eighty-nine".