4040439 has 16 divisors (see below), whose sum is σ = 5841024. Its totient is φ = 2469600.

The previous prime is 4040431. The next prime is 4040459. The reversal of 4040439 is 9340404.

It is not a de Polignac number, because 4040439 - 2³ = 4040431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7984 + ... + 8474.

It is an arithmetic number, because the mean of its divisors is an integer number (365064).

Almost surely, 2^4040439 is an apocalyptic number.

4040439 is a deficient number, since it is larger than the sum of its proper divisors (1800585).

4040439 is a wasteful number, since it uses less digits than its factorization.

4040439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 4040439 is about 2010.0843265893. The cubic root of 4040439 is about 159.2732534739.

The spelling of 4040439 in words is "four million, forty thousand, four hundred thirty-nine".