40003251444 has 36 divisors (see below), whose sum is σ = 108897741316. Its totient is φ = 12308692608.

The previous prime is 40003251443. The next prime is 40003251451. The reversal of 40003251444 is 44415230004.

It is a happy number.

40003251444 is a `hidden beast` number, since 400 + 0 + 3 + 251 + 4 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8397523044 + 31605728400 = 91638^2 + 177780^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40003251443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42738049 + ... + 42738984.

Almost surely, 2^40003251444 is an apocalyptic number.

It is an amenable number.

40003251444 is an abundant number, since it is smaller than the sum of its proper divisors (68894489872).

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

40003251444 is a wasteful number, since it uses less digits than its factorization.

40003251444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85477056 (or 85477051 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 40003251444 its reverse (44415230004), we get a palindrome (84418481448).

The spelling of 40003251444 in words is "forty billion, three million, two hundred fifty-one thousand, four hundred forty-four".