40000644404 has 12 divisors (see below), whose sum is σ = 80001288864. Its totient is φ = 17143133304.

The previous prime is 40000644403. The next prime is 40000644421. The reversal of 40000644404 is 40444600004.

40000644404 is an admirable number.

It is a super-4 number, since 4×40000644404⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000644403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714297194 + ... + 714297249.

It is an arithmetic number, because the mean of its divisors is an integer number (6666774072).

Almost surely, 2^40000644404 is an apocalyptic number.

It is an amenable number.

40000644404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40000644404 is a wasteful number, since it uses less digits than its factorization.

40000644404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428594454 (or 1428594452 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The spelling of 40000644404 in words is "forty billion, six hundred forty-four thousand, four hundred four".