40443424 has 36 divisors (see below), whose sum is σ = 92626254. Its totient is φ = 17332224.

The previous prime is 40443413. The next prime is 40443433. The reversal of 40443424 is 42434404.

It can be written as a sum of positive squares in only one way, i.e., 39690000 + 753424 = 6300^2 + 868^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11329 + ... + 14464.

Almost surely, 2^40443424 is an apocalyptic number.

It is an amenable number.

40443424 is an abundant number, since it is smaller than the sum of its proper divisors (52182830).

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

40443424 is a wasteful number, since it uses less digits than its factorization.

40443424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25817 (or 25802 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 40443424 is about 6359.5144468741. The cubic root of 40443424 is about 343.2542887334.

Adding to 40443424 its reverse (42434404), we get a palindrome (82877828).

The spelling of 40443424 in words is "forty million, four hundred forty-three thousand, four hundred twenty-four".