4021039 has 8 divisors (see below), whose sum is σ = 4414032. Its totient is φ = 3632640.

The previous prime is 4021033. The next prime is 4021051. The reversal of 4021039 is 9301204.

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

It is not a de Polignac number, because 4021039 - 2¹³ = 4012847 is a prime.

It is a Duffinian number.

4021039 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847 + ... + 2959.

It is an arithmetic number, because the mean of its divisors is an integer number (551754).

Almost surely, 2^4021039 is an apocalyptic number.

4021039 is a deficient number, since it is larger than the sum of its proper divisors (392993).

4021039 is a wasteful number, since it uses less digits than its factorization.

4021039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 4021039 is about 2005.2528518868. The cubic root of 4021039 is about 159.0179297582.

It can be divided in two parts, 402 and 1039, that added together give a palindrome (1441).

The spelling of 4021039 in words is "four million, twenty-one thousand, thirty-nine".