40221313444 has 36 divisors (see below), whose sum is σ = 78325897692. Its totient is φ = 17964832320.

The previous prime is 40221313439. The next prime is 40221313459. The reversal of 40221313444 is 44431312204.

It can be written as a sum of positive squares in 2 ways, for example, as 21700825344 + 18520488100 = 147312^2 + 136090^2 .

It is a super-2 number, since 2×40221313444² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352467 + ... + 452410.

Almost surely, 2^40221313444 is an apocalyptic number.

It is an amenable number.

40221313444 is a deficient number, since it is larger than the sum of its proper divisors (38104584248).

40221313444 is a wasteful number, since it uses less digits than its factorization.

40221313444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804956 (or 804923 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 40221313444 its reverse (44431312204), we get a palindrome (84652625648).

The spelling of 40221313444 in words is "forty billion, two hundred twenty-one million, three hundred thirteen thousand, four hundred forty-four".