4002238 has 8 divisors (see below), whose sum is σ = 6131232. Its totient is φ = 1958496.

The previous prime is 4002223. The next prime is 4002239. The reversal of 4002238 is 8322004.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002239) 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 3 ways as a sum of consecutive naturals, for example, 21195 + ... + 21382.

It is an arithmetic number, because the mean of its divisors is an integer number (766404).

Almost surely, 2^4002238 is an apocalyptic number.

4002238 is a deficient number, since it is larger than the sum of its proper divisors (2128994).

4002238 is a wasteful number, since it uses less digits than its factorization.

4002238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42626.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4002238 is about 2000.5594217618. The cubic root of 4002238 is about 158.7697047068.

The spelling of 4002238 in words is "four million, two thousand, two hundred thirty-eight".