4043538 has 24 divisors (see below), whose sum is σ = 9142848. Its totient is φ = 1289112.

The previous prime is 4043527. The next prime is 4043539. The reversal of 4043538 is 8353404.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4043539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4470 + ... + 5297.

It is an arithmetic number, because the mean of its divisors is an integer number (380952).

Almost surely, 2^4043538 is an apocalyptic number.

4043538 is an abundant number, since it is smaller than the sum of its proper divisors (5099310).

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

4043538 is a wasteful number, since it uses less digits than its factorization.

4043538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9798 (or 9795 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 4043538 is about 2010.8550420157. The cubic root of 4043538 is about 159.3139637096.

The spelling of 4043538 in words is "four million, forty-three thousand, five hundred thirty-eight".