40441439 has 4 divisors (see below), whose sum is σ = 40459224. Its totient is φ = 40423656.

The previous prime is 40441409. The next prime is 40441459. The reversal of 40441439 is 93414404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40441439 - 2⁸ = 40441183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40441409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4877 + ... + 10230.

It is an arithmetic number, because the mean of its divisors is an integer number (10114806).

Almost surely, 2^40441439 is an apocalyptic number.

40441439 is a deficient number, since it is larger than the sum of its proper divisors (17785).

40441439 is a wasteful number, since it uses less digits than its factorization.

40441439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17784.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 40441439 is about 6359.3583795852. The cubic root of 40441439 is about 343.2486728974.

The spelling of 40441439 in words is "forty million, four hundred forty-one thousand, four hundred thirty-nine".