40144372 has 6 divisors (see below), whose sum is σ = 70252658. Its totient is φ = 20072184.

The previous prime is 40144339. The next prime is 40144417. The reversal of 40144372 is 27344104.

40144372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 30184036 + 9960336 = 5494^2 + 3156^2 .

It is a super-3 number, since 3×40144372³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5018043 + ... + 5018050.

Almost surely, 2^40144372 is an apocalyptic number.

It is an amenable number.

40144372 is a deficient number, since it is larger than the sum of its proper divisors (30108286).

40144372 is a wasteful number, since it uses less digits than its factorization.

40144372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10036097 (or 10036095 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40144372 is about 6335.9586488550. The cubic root of 40144372 is about 342.4061497170.

Adding to 40144372 its reverse (27344104), we get a palindrome (67488476).

The spelling of 40144372 in words is "forty million, one hundred forty-four thousand, three hundred seventy-two".