40044002002 has 8 divisors (see below), whose sum is σ = 60112176012. Its totient is φ = 20006610000.

The previous prime is 40044001997. The next prime is 40044002017. The reversal of 40044002002 is 20020044004.

It can be written as a sum of positive squares in 2 ways, for example, as 38486200041 + 1557801961 = 196179^2 + 39469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7692249 + ... + 7697452.

Almost surely, 2^40044002002 is an apocalyptic number.

40044002002 is a deficient number, since it is larger than the sum of its proper divisors (20068174010).

40044002002 is a wasteful number, since it uses less digits than its factorization.

40044002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15391004.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 40044002002 its reverse (20020044004), we get a palindrome (60064046006).

The spelling of 40044002002 in words is "forty billion, forty-four million, two thousand, two", and thus it is an eban number.