4040438 has 16 divisors (see below), whose sum is σ = 6244560. Its totient is φ = 1959936.

The previous prime is 4040431. The next prime is 4040459. The reversal of 4040438 is 8340404.

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 7 ways as a sum of consecutive naturals, for example, 11270 + ... + 11622.

It is an arithmetic number, because the mean of its divisors is an integer number (390285).

Almost surely, 2^4040438 is an apocalyptic number.

4040438 is a deficient number, since it is larger than the sum of its proper divisors (2204122).

4040438 is a wasteful number, since it uses less digits than its factorization.

4040438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4040438 is about 2010.0840778435. The cubic root of 4040438 is about 159.2732403339.

The spelling of 4040438 in words is "four million, forty thousand, four hundred thirty-eight".