2109385 has 8 divisors (see below), whose sum is σ = 2556936. Its totient is φ = 1670400.

The previous prime is 2109329. The next prime is 2109391. The reversal of 2109385 is 5839012.

It can be written as a sum of positive squares in 4 ways, for example, as 1227664 + 881721 = 1108^2 + 939^2 .

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

It is not a de Polignac number, because 2109385 - 2¹⁵ = 2076617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1584 + ... + 2593.

It is an arithmetic number, because the mean of its divisors is an integer number (319617).

2^2109385 is an apocalyptic number.

It is an amenable number.

2109385 is a deficient number, since it is larger than the sum of its proper divisors (447551).

2109385 is a wasteful number, since it uses less digits than its factorization.

2109385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2109385 is about 1452.3721974756. The cubic root of 2109385 is about 128.2483986642.

The spelling of 2109385 in words is "two million, one hundred nine thousand, three hundred eighty-five".