4006823 has 2 divisors, whose sum is σ = 4006824. Its totient is φ = 4006822.

The previous prime is 4006811. The next prime is 4006837. The reversal of 4006823 is 3286004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4006823 - 2⁸ = 4006567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4006423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2003411 + 2003412.

It is an arithmetic number, because the mean of its divisors is an integer number (2003412).

Almost surely, 2^4006823 is an apocalyptic number.

4006823 is a deficient number, since it is larger than the sum of its proper divisors (1).

4006823 is an equidigital number, since it uses as much as digits as its factorization.

4006823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 4006823 is about 2001.7050232240. The cubic root of 4006823 is about 158.8303109049.

The spelling of 4006823 in words is "four million, six thousand, eight hundred twenty-three".