40001144 has 32 divisors (see below), whose sum is σ = 78217680. Its totient is φ = 19160064.

The previous prime is 40001111. The next prime is 40001161. The reversal of 40001144 is 44110004.

40001144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

40001144 is a modest number, since divided by 1144 gives 40 as remainder.

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 in 7 ways as a sum of consecutive naturals, for example, 18824 + ... + 20840.

Almost surely, 2^40001144 is an apocalyptic number.

It is an amenable number.

40001144 is a deficient number, since it is larger than the sum of its proper divisors (38216536).

40001144 is a wasteful number, since it uses less digits than its factorization.

40001144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 40001144 is about 6324.6457608312. The cubic root of 40001144 is about 341.9984496584.

Adding to 40001144 its reverse (44110004), we get a palindrome (84111148).

The spelling of 40001144 in words is "forty million, one thousand, one hundred forty-four".