4000004000002 has 4 divisors (see below), whose sum is σ = 6000006000006. Its totient is φ = 2000002000000.

The previous prime is 4000003999951. The next prime is 4000004000017. The reversal of 4000004000002 is 2000004000004.

It is a Cunningham number, because it is equal to 2000001²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4000004000001 + 1 = 2000001^2 + 1^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1000000999999 + ... + 1000001000002.

Almost surely, 2^{4000004000002} is an apocalyptic number.

4000004000002 is a deficient number, since it is larger than the sum of its proper divisors (2000002000004).

4000004000002 is a wasteful number, since it uses less digits than its factorization.

4000004000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000002000003.

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 4000004000002 its reverse (2000004000004), we get a palindrome (6000008000006).

The spelling of 4000004000002 in words is "four trillion, four million, two", and thus it is an aban number and an eban number.