2863409 has 4 divisors (see below), whose sum is σ = 2870820. Its totient is φ = 2856000.

The previous prime is 2863403. The next prime is 2863423. The reversal of 2863409 is 9043682.

2863409 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: 9043682 = 2 ⋅4521841.

It can be written as a sum of positive squares in 2 ways, for example, as 2002225 + 861184 = 1415^2 + 928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2863409 is a prime.

It is a super-2 number, since 2×2863409² = 16398222202562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2863403) 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 3 ways as a sum of consecutive naturals, for example, 3092 + ... + 3909.

It is an arithmetic number, because the mean of its divisors is an integer number (717705).

2^2863409 is an apocalyptic number.

It is an amenable number.

2863409 is a deficient number, since it is larger than the sum of its proper divisors (7411).

2863409 is an equidigital number, since it uses as much as digits as its factorization.

2863409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7410.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2863409 is about 1692.1610443454. The cubic root of 2863409 is about 142.0020002363.

The spelling of 2863409 in words is "two million, eight hundred sixty-three thousand, four hundred nine".