40008739556 has 24 divisors (see below), whose sum is σ = 75941988696. Its totient is φ = 18368430080.

The previous prime is 40008739553. The next prime is 40008739609. The reversal of 40008739556 is 65593780004.

It can be written as a sum of positive squares in 4 ways, for example, as 439573156 + 39569166400 = 20966^2 + 198920^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40008739556.

It is not an unprimeable number, because it can be changed into a prime (40008739553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7172381 + ... + 7177956.

It is an arithmetic number, because the mean of its divisors is an integer number (3164249529).

Almost surely, 2^40008739556 is an apocalyptic number.

It is an amenable number.

40008739556 is a deficient number, since it is larger than the sum of its proper divisors (35933249140).

40008739556 is a wasteful number, since it uses less digits than its factorization.

40008739556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14350399 (or 14350397 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 40008739556 in words is "forty billion, eight million, seven hundred thirty-nine thousand, five hundred fifty-six".