2905823 has 2 divisors, whose sum is σ = 2905824. Its totient is φ = 2905822.

The previous prime is 2905807. The next prime is 2905853. The reversal of 2905823 is 3285092.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2905823 - 2⁴ = 2905807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2905853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1452911 + 1452912.

It is an arithmetic number, because the mean of its divisors is an integer number (1452912).

2^2905823 is an apocalyptic number.

2905823 is a deficient number, since it is larger than the sum of its proper divisors (1).

2905823 is an equidigital number, since it uses as much as digits as its factorization.

2905823 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 2905823 is about 1704.6474708866. The cubic root of 2905823 is about 142.6996974451.

The spelling of 2905823 in words is "two million, nine hundred five thousand, eight hundred twenty-three".