2805923 has 2 divisors, whose sum is σ = 2805924. Its totient is φ = 2805922.

The previous prime is 2805911. The next prime is 2805949. The reversal of 2805923 is 3295082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2805923 - 2¹⁰ = 2804899 is a prime.

It is not a weakly prime, because it can be changed into another prime (2805973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402961 + 1402962.

It is an arithmetic number, because the mean of its divisors is an integer number (1402962).

2^2805923 is an apocalyptic number.

2805923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805923 is an equidigital number, since it uses as much as digits as its factorization.

2805923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2805923 is about 1675.0889528619. The cubic root of 2805923 is about 141.0452883376.

It can be divided in two parts, 28059 and 23, that added together give a palindrome (28082).

The spelling of 2805923 in words is "two million, eight hundred five thousand, nine hundred twenty-three".