4394438 has 16 divisors (see below), whose sum is σ = 6773760. Its totient is φ = 2137416.

The previous prime is 4394437. The next prime is 4394441. The reversal of 4394438 is 8344934.

It is a super-2 number, since 2×4394438² = 38622170671688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4394398 and 4394407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4394431) 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, 19595 + ... + 19817.

It is an arithmetic number, because the mean of its divisors is an integer number (423360).

Almost surely, 2^4394438 is an apocalyptic number.

4394438 is a deficient number, since it is larger than the sum of its proper divisors (2379322).

4394438 is a wasteful number, since it uses less digits than its factorization.

4394438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its digits is 41472, while the sum is 35.

The square root of 4394438 is about 2096.2914873652. The cubic root of 4394438 is about 163.7951785680.

The spelling of 4394438 in words is "four million, three hundred ninety-four thousand, four hundred thirty-eight".