4036005 has 12 divisors (see below), whose sum is σ = 6995820. Its totient is φ = 2152512.

The previous prime is 4036001. The next prime is 4036007. The reversal of 4036005 is 5006304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2056356 + 1979649 = 1434^2 + 1407^2 .

It is not a de Polignac number, because 4036005 - 2² = 4036001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4036001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44800 + ... + 44889.

It is an arithmetic number, because the mean of its divisors is an integer number (582985).

Almost surely, 2^4036005 is an apocalyptic number.

4036005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4036005 is a deficient number, since it is larger than the sum of its proper divisors (2959815).

4036005 is a wasteful number, since it uses less digits than its factorization.

4036005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89700 (or 89697 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 4036005 is about 2008.9810850279. The cubic root of 4036005 is about 159.2149697000.

Subtracting 4036005 from its reverse (5006304), we obtain a cube (970299 = 99³).

The spelling of 4036005 in words is "four million, thirty-six thousand, five".