2094209 has 4 divisors (see below), whose sum is σ = 2255316. Its totient is φ = 1933104.

The previous prime is 2094203. The next prime is 2094221. The reversal of 2094209 is 9024902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9024902 = 2 ⋅4512451.

It can be written as a sum of positive squares in 2 ways, for example, as 330625 + 1763584 = 575^2 + 1328^2 .

It is a cyclic number.

It is not a de Polignac number, because 2094209 - 2⁸ = 2093953 is a prime.

It is a super-2 number, since 2×2094209² = 8771422671362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2094203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80534 + ... + 80559.

It is an arithmetic number, because the mean of its divisors is an integer number (563829).

2^2094209 is an apocalyptic number.

It is an amenable number.

2094209 is a deficient number, since it is larger than the sum of its proper divisors (161107).

2094209 is a wasteful number, since it uses less digits than its factorization.

2094209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161106.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2094209 is about 1447.1382104001. The cubic root of 2094209 is about 127.9400964815.

The spelling of 2094209 in words is "two million, ninety-four thousand, two hundred nine".