3920823 has 6 divisors (see below), whose sum is σ = 5663424. Its totient is φ = 2613876.

The previous prime is 3920797. The next prime is 3920843. The reversal of 3920823 is 3280293.

It is not a de Polignac number, because 3920823 - 2⁶ = 3920759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217815 + ... + 217832.

It is an arithmetic number, because the mean of its divisors is an integer number (943904).

Almost surely, 2^3920823 is an apocalyptic number.

3920823 is a deficient number, since it is larger than the sum of its proper divisors (1742601).

3920823 is a wasteful number, since it uses less digits than its factorization.

3920823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435653 (or 435650 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3920823 is about 1980.1068153006. The cubic root of 3920823 is about 157.6857370377.

The spelling of 3920823 in words is "three million, nine hundred twenty thousand, eight hundred twenty-three".