4338821 has 4 divisors (see below), whose sum is σ = 4567200. Its totient is φ = 4110444.

The previous prime is 4338811. The next prime is 4338823. The reversal of 4338821 is 1288334.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4338821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4338823) 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, 114161 + ... + 114198.

It is an arithmetic number, because the mean of its divisors is an integer number (1141800).

Almost surely, 2^4338821 is an apocalyptic number.

It is an amenable number.

4338821 is a deficient number, since it is larger than the sum of its proper divisors (228379).

4338821 is a wasteful number, since it uses less digits than its factorization.

4338821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228378.

The product of its digits is 4608, while the sum is 29.

The square root of 4338821 is about 2082.9836773244. The cubic root of 4338821 is about 163.1012331115.

The spelling of 4338821 in words is "four million, three hundred thirty-eight thousand, eight hundred twenty-one".