2805394 has 4 divisors (see below), whose sum is σ = 4208094. Its totient is φ = 1402696.

The previous prime is 2805389. The next prime is 2805403. The reversal of 2805394 is 4935082.

2805394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4935082 = 2 ⋅2467541.

It can be written as a sum of positive squares in only one way, i.e., 1471369 + 1334025 = 1213^2 + 1155^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 701347 + ... + 701350.

2^2805394 is an apocalyptic number.

2805394 is a deficient number, since it is larger than the sum of its proper divisors (1402700).

2805394 is a wasteful number, since it uses less digits than its factorization.

2805394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402699.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2805394 is about 1674.9310433567. The cubic root of 2805394 is about 141.0364240356.

The spelling of 2805394 in words is "two million, eight hundred five thousand, three hundred ninety-four".