40444004428 has 36 divisors (see below), whose sum is σ = 79142426440. Its totient is φ = 18030753792.

The previous prime is 40444004413. The next prime is 40444004441. The reversal of 40444004428 is 82440044404.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 40444004393 and 40444004402.

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, 898725 + ... + 942652.

Almost surely, 2^40444004428 is an apocalyptic number.

It is an amenable number.

40444004428 is a deficient number, since it is larger than the sum of its proper divisors (38698422012).

40444004428 is a wasteful number, since it uses less digits than its factorization.

40444004428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841434 (or 1841415 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 34.

The spelling of 40444004428 in words is "forty billion, four hundred forty-four million, four thousand, four hundred twenty-eight".