2000400002 has 4 divisors (see below), whose sum is σ = 3000600006. Its totient is φ = 1000200000.

The previous prime is 2000399993. The next prime is 2000400011. The reversal of 2000400002 is 2000040002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2000040002 = 2 ⋅1000020001.

It is an interprime number because it is at equal distance from previous prime (2000399993) and next prime (2000400011).

It can be written as a sum of positive squares in only one way, i.e., 1998000601 + 2399401 = 44699^2 + 1549^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500099999 + ... + 500100002.

Almost surely, 2^2000400002 is an apocalyptic number.

2000400002 is a deficient number, since it is larger than the sum of its proper divisors (1000200004).

2000400002 is a wasteful number, since it uses less digits than its factorization.

2000400002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000200003.

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

The square root of 2000400002 is about 44725.8314847248. The cubic root of 2000400002 is about 1260.0050394524.

Adding to 2000400002 its reverse (2000040002), we get a palindrome (4000440004).

Subtracting from 2000400002 its reverse (2000040002), we obtain a square (360000 = 600²).

It can be divided in two parts, 200040000 and 2, that added together give a palindrome (200040002).

The spelling of 2000400002 in words is "two billion, four hundred thousand, two".