2805349 has 4 divisors (see below), whose sum is σ = 2825964. Its totient is φ = 2784736.

The previous prime is 2805311. The next prime is 2805353. The reversal of 2805349 is 9435082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1940449 + 864900 = 1393^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805349 - 2¹⁹ = 2281061 is a prime.

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 a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2805349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805389) 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, 10102 + ... + 10375.

It is an arithmetic number, because the mean of its divisors is an integer number (706491).

2^2805349 is an apocalyptic number.

It is an amenable number.

2805349 is a deficient number, since it is larger than the sum of its proper divisors (20615).

2805349 is a wasteful number, since it uses less digits than its factorization.

2805349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20614.

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

The square root of 2805349 is about 1674.9176099140. The cubic root of 2805349 is about 141.0356699320.

The spelling of 2805349 in words is "two million, eight hundred five thousand, three hundred forty-nine".