4023866 has 64 divisors (see below), whose sum is σ = 8398080. Its totient is φ = 1397760.

The previous prime is 4023853. The next prime is 4023871. The reversal of 4023866 is 6683204.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 75896 + ... + 75948.

It is an arithmetic number, because the mean of its divisors is an integer number (131220).

Almost surely, 2^4023866 is an apocalyptic number.

4023866 is an abundant number, since it is smaller than the sum of its proper divisors (4374214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4023866 is a wasteful number, since it uses less digits than its factorization.

4023866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 4023866 is about 2005.9576266711. The cubic root of 4023866 is about 159.0551869926.

It can be divided in two parts, 40238 and 66, that added together give a palindrome (40304).

The spelling of 4023866 in words is "four million, twenty-three thousand, eight hundred sixty-six".