40140344 has 16 divisors (see below), whose sum is σ = 75372120. Its totient is φ = 20041120.

The previous prime is 40140343. The next prime is 40140367. The reversal of 40140344 is 44304104.

40140344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40140344² = 3222494432876672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2939 + ... + 9429.

Almost surely, 2^40140344 is an apocalyptic number.

It is an amenable number.

40140344 is a deficient number, since it is larger than the sum of its proper divisors (35231776).

40140344 is a wasteful number, since it uses less digits than its factorization.

40140344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7270 (or 7266 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40140344 is about 6335.6407726449. The cubic root of 40140344 is about 342.3946972350.

Adding to 40140344 its reverse (44304104), we get a palindrome (84444448).

The spelling of 40140344 in words is "forty million, one hundred forty thousand, three hundred forty-four".