4004238 has 16 divisors (see below), whose sum is σ = 9152640. Its totient is φ = 1144056.

The previous prime is 4004237. The next prime is 4004249. The reversal of 4004238 is 8324004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004237) 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, 47628 + ... + 47711.

It is an arithmetic number, because the mean of its divisors is an integer number (572040).

Almost surely, 2^4004238 is an apocalyptic number.

4004238 is an abundant number, since it is smaller than the sum of its proper divisors (5148402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4004238 is a wasteful number, since it uses less digits than its factorization.

4004238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95351.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4004238 is about 2001.0592195135. The cubic root of 4004238 is about 158.7961471232.

The spelling of 4004238 in words is "four million, four thousand, two hundred thirty-eight".