40020100444 has 36 divisors (see below), whose sum is σ = 75018634824. Its totient is φ = 18673905888.

The previous prime is 40020100403. The next prime is 40020100457. The reversal of 40020100444 is 44400102004.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

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, 110079 + ... + 303574.

Almost surely, 2^40020100444 is an apocalyptic number.

It is an amenable number.

40020100444 is a deficient number, since it is larger than the sum of its proper divisors (34998534380).

40020100444 is a wasteful number, since it uses less digits than its factorization.

40020100444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413762 (or 413741 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 40020100444 its reverse (44400102004), we get a palindrome (84420202448).

The spelling of 40020100444 in words is "forty billion, twenty million, one hundred thousand, four hundred forty-four".