2109394 has 16 divisors (see below), whose sum is σ = 3829248. Its totient is φ = 850752.

The previous prime is 2109391. The next prime is 2109403. The reversal of 2109394 is 4939012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2109391) 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, 4194 + ... + 4669.

It is an arithmetic number, because the mean of its divisors is an integer number (239328).

2^2109394 is an apocalyptic number.

2109394 is a deficient number, since it is larger than the sum of its proper divisors (1719854).

2109394 is a wasteful number, since it uses less digits than its factorization.

2109394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8889.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2109394 is about 1452.3752958516. The cubic root of 2109394 is about 128.2485810608.

It can be divided in two parts, 210 and 9394, that added together give a square (9604 = 98²).

The spelling of 2109394 in words is "two million, one hundred nine thousand, three hundred ninety-four".