4023939 has 4 divisors (see below), whose sum is σ = 5365256. Its totient is φ = 2682624.

The previous prime is 4023937. The next prime is 4023947. The reversal of 4023939 is 9393204.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4023939 - 2¹ = 4023937 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4023937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670654 + ... + 670659.

It is an arithmetic number, because the mean of its divisors is an integer number (1341314).

Almost surely, 2^4023939 is an apocalyptic number.

4023939 is a deficient number, since it is larger than the sum of its proper divisors (1341317).

4023939 is a wasteful number, since it uses less digits than its factorization.

4023939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341316.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 4023939 is about 2005.9758223867. The cubic root of 4023939 is about 159.0561488336.

The spelling of 4023939 in words is "four million, twenty-three thousand, nine hundred thirty-nine".