4003002005 has 4 divisors (see below), whose sum is σ = 4803602412. Its totient is φ = 3202401600.

The previous prime is 4003001971. The next prime is 4003002011. The reversal of 4003002005 is 5002003004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2824178449 + 1178823556 = 53143^2 + 34334^2 .

It is not a de Polignac number, because 4003002005 - 2⁶ = 4003001941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400300196 + ... + 400300205.

It is an arithmetic number, because the mean of its divisors is an integer number (1200900603).

Almost surely, 2^4003002005 is an apocalyptic number.

It is an amenable number.

4003002005 is a deficient number, since it is larger than the sum of its proper divisors (800600407).

4003002005 is an equidigital number, since it uses as much as digits as its factorization.

4003002005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800600406.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 4003002005 is about 63269.2816855068. The cubic root of 4003002005 is about 1587.7980681556.

Adding to 4003002005 its reverse (5002003004), we get a palindrome (9005005009).

Subtracting 4003002005 from its reverse (5002003004), we obtain a palindrome (999000999).

The spelling of 4003002005 in words is "four billion, three million, two thousand, five".