4003980005 has 4 divisors (see below), whose sum is σ = 4804776012. Its totient is φ = 3203184000.

The previous prime is 4003979999. The next prime is 4003980007. The reversal of 4003980005 is 5000893004.

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 686335204 + 3317644801 = 26198^2 + 57599^2 .

It is not a de Polignac number, because 4003980005 - 2¹⁶ = 4003914469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4003980005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4003980007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400397996 + ... + 400398005.

It is an arithmetic number, because the mean of its divisors is an integer number (1201194003).

Almost surely, 2^4003980005 is an apocalyptic number.

It is an amenable number.

4003980005 is a deficient number, since it is larger than the sum of its proper divisors (800796007).

4003980005 is an equidigital number, since it uses as much as digits as its factorization.

4003980005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800796006.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 4003980005 is about 63277.0100826517. The cubic root of 4003980005 is about 1587.9273661227.

The spelling of 4003980005 in words is "four billion, three million, nine hundred eighty thousand, five".