4000002002 has 4 divisors (see below), whose sum is σ = 6000003006. Its totient is φ = 2000001000.

The previous prime is 4000002001. The next prime is 4000002091. The reversal of 4000002002 is 2002000004.

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., 3495056161 + 504945841 = 59119^2 + 22471^2 .

It is not an unprimeable number, because it can be changed into a prime (4000002001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000000499 + ... + 1000000502.

Almost surely, 2^4000002002 is an apocalyptic number.

4000002002 is a deficient number, since it is larger than the sum of its proper divisors (2000001004).

4000002002 is a wasteful number, since it uses less digits than its factorization.

4000002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000001003.

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 4000002002 is about 63245.5690305653. The cubic root of 4000002002 is about 1587.4013167996.

Adding to 4000002002 its reverse (2002000004), we get a palindrome (6002002006).

The spelling of 4000002002 in words is "four billion, two thousand, two", and thus it is an eban number.