4391838 has 48 divisors (see below), whose sum is σ = 10653552. Its totient is φ = 1296000.

The previous prime is 4391819. The next prime is 4391839. The reversal of 4391838 is 8381934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7848 + ... + 8388.

It is an arithmetic number, because the mean of its divisors is an integer number (221949).

Almost surely, 2^4391838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4391838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5326776).

4391838 is an abundant number, since it is smaller than the sum of its proper divisors (6261714).

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

4391838 is a wasteful number, since it uses less digits than its factorization.

4391838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 598 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 4391838 is about 2095.6712528448. The cubic root of 4391838 is about 163.7628686738.

It can be divided in two parts, 43918 and 38, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 4391838 in words is "four million, three hundred ninety-one thousand, eight hundred thirty-eight".