4023861 has 8 divisors (see below), whose sum is σ = 5510304. Its totient is φ = 2610000.

The previous prime is 4023853. The next prime is 4023871. The reversal of 4023861 is 1683204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4023861 - 2³ = 4023853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023821) 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 in 7 ways as a sum of consecutive naturals, for example, 18015 + ... + 18236.

It is an arithmetic number, because the mean of its divisors is an integer number (688788).

Almost surely, 2^4023861 is an apocalyptic number.

It is an amenable number.

4023861 is a deficient number, since it is larger than the sum of its proper divisors (1486443).

4023861 is a wasteful number, since it uses less digits than its factorization.

4023861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36291.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 4023861 is about 2005.9563803832. The cubic root of 4023861 is about 159.0551211126.

It can be divided in two parts, 4023 and 861, that added together give a palindrome (4884).

The spelling of 4023861 in words is "four million, twenty-three thousand, eight hundred sixty-one".