40144472 has 16 divisors (see below), whose sum is σ = 75373200. Its totient is φ = 20044960.

The previous prime is 40144471. The next prime is 40144483. The reversal of 40144472 is 27444104.

It is a super-2 number, since 2×40144472² = 3223157264317568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40144471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3722 + ... + 9702.

It is an arithmetic number, because the mean of its divisors is an integer number (4710825).

Almost surely, 2^40144472 is an apocalyptic number.

It is an amenable number.

40144472 is a deficient number, since it is larger than the sum of its proper divisors (35228728).

40144472 is a wasteful number, since it uses less digits than its factorization.

40144472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6826 (or 6822 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 40144472 is about 6335.9665403157. The cubic root of 40144472 is about 342.4064340291.

Adding to 40144472 its reverse (27444104), we get a palindrome (67588576).

The spelling of 40144472 in words is "forty million, one hundred forty-four thousand, four hundred seventy-two".