4011005 has 8 divisors (see below), whose sum is σ = 4842072. Its totient is φ = 3189568.

The previous prime is 4010977. The next prime is 4011011. The reversal of 4011005 is 5001104.

It can be written as a sum of positive squares in 4 ways, for example, as 702244 + 3308761 = 838^2 + 1819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4011005 - 2¹⁴ = 3994621 is a prime.

It is a super-2 number, since 2×4011005² = 32176322220050, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 1454 + ... + 3183.

It is an arithmetic number, because the mean of its divisors is an integer number (605259).

Almost surely, 2^4011005 is an apocalyptic number.

It is an amenable number.

4011005 is a deficient number, since it is larger than the sum of its proper divisors (831067).

4011005 is a wasteful number, since it uses less digits than its factorization.

4011005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 4011005 is about 2002.7493602545. The cubic root of 4011005 is about 158.8855497982.

Adding to 4011005 its reverse (5001104), we get a palindrome (9012109).

Subtracting 4011005 from its reverse (5001104), we obtain a palindrome (990099).

The spelling of 4011005 in words is "four million, eleven thousand, five".