4028405005 has 4 divisors (see below), whose sum is σ = 4834086012. Its totient is φ = 3222724000.

The previous prime is 4028404999. The next prime is 4028405027. The reversal of 4028405005 is 5005048204.

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 961682121 + 3066722884 = 31011^2 + 55378^2 .

It is not a de Polignac number, because 4028405005 - 2³ = 4028404997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402840496 + ... + 402840505.

It is an arithmetic number, because the mean of its divisors is an integer number (1208521503).

Almost surely, 2^4028405005 is an apocalyptic number.

It is an amenable number.

4028405005 is a deficient number, since it is larger than the sum of its proper divisors (805681007).

4028405005 is an equidigital number, since it uses as much as digits as its factorization.

4028405005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805681006.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 4028405005 is about 63469.7172279820. The cubic root of 4028405005 is about 1591.1497037834.

The spelling of 4028405005 in words is "four billion, twenty-eight million, four hundred five thousand, five".