40000040084 has 12 divisors (see below), whose sum is σ = 70002162804. Its totient is φ = 19999422144.

The previous prime is 40000040077. The next prime is 40000040089. The reversal of 40000040084 is 48004000004.

It can be written as a sum of positive squares in 2 ways, for example, as 1457712400 + 38542327684 = 38180^2 + 196322^2 .

It is a super-3 number, since 3×40000040084³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000040089) 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, 23222 + ... + 283794.

It is an arithmetic number, because the mean of its divisors is an integer number (5833513567).

Almost surely, 2^40000040084 is an apocalyptic number.

It is an amenable number.

40000040084 is a deficient number, since it is larger than the sum of its proper divisors (30002122720).

40000040084 is a wasteful number, since it uses less digits than its factorization.

40000040084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298954 (or 298952 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 40000040084 its reverse (48004000004), we get a palindrome (88004040088).

The spelling of 40000040084 in words is "forty billion, forty thousand, eighty-four".