4338021 has 4 divisors (see below), whose sum is σ = 5784032. Its totient is φ = 2892012.

The previous prime is 4338013. The next prime is 4338031. The reversal of 4338021 is 1208334.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4338021 - 2³ = 4338013 is a prime.

It is a super-3 number, since 3×4338021³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

4338021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4338011) 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, 723001 + ... + 723006.

It is an arithmetic number, because the mean of its divisors is an integer number (1446008).

Almost surely, 2^4338021 is an apocalyptic number.

It is an amenable number.

4338021 is a deficient number, since it is larger than the sum of its proper divisors (1446011).

4338021 is a wasteful number, since it uses less digits than its factorization.

4338021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446010.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4338021 is about 2082.7916362421. The cubic root of 4338021 is about 163.0912081910.

The spelling of 4338021 in words is "four million, three hundred thirty-eight thousand, twenty-one".