4040839 has 8 divisors (see below), whose sum is σ = 4511232. Its totient is φ = 3587640.

The previous prime is 4040833. The next prime is 4040873. The reversal of 4040839 is 9380404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4040839 - 2⁹ = 4040327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040833) 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, 3799 + ... + 4744.

It is an arithmetic number, because the mean of its divisors is an integer number (563904).

Almost surely, 2^4040839 is an apocalyptic number.

4040839 is a deficient number, since it is larger than the sum of its proper divisors (470393).

4040839 is a wasteful number, since it uses less digits than its factorization.

4040839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8597.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 4040839 is about 2010.1838224401. The cubic root of 4040839 is about 159.2785092723.

The spelling of 4040839 in words is "four million, forty thousand, eight hundred thirty-nine".