2109390 has 16 divisors (see below), whose sum is σ = 5062608. Its totient is φ = 562496.

The previous prime is 2109329. The next prime is 2109391. The reversal of 2109390 is 939012.

It is a happy number.

2109390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2109390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35127 + ... + 35186.

It is an arithmetic number, because the mean of its divisors is an integer number (316413).

2^2109390 is an apocalyptic number.

2109390 is an abundant number, since it is smaller than the sum of its proper divisors (2953218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2109390 is a wasteful number, since it uses less digits than its factorization.

2109390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70323.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 2109390 is about 1452.3739187964. The cubic root of 2109390 is about 128.2484999958.

The spelling of 2109390 in words is "two million, one hundred nine thousand, three hundred ninety".