4005053405 has 4 divisors (see below), whose sum is σ = 4806064092. Its totient is φ = 3204042720.

The previous prime is 4005053321. The next prime is 4005053417. The reversal of 4005053405 is 5043505004.

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 1736722276 + 2268331129 = 41674^2 + 47627^2 .

It is not a de Polignac number, because 4005053405 - 2²⁸ = 3736617949 is a prime.

It is a Duffinian 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, 400505336 + ... + 400505345.

It is an arithmetic number, because the mean of its divisors is an integer number (1201516023).

Almost surely, 2^4005053405 is an apocalyptic number.

It is an amenable number.

4005053405 is a deficient number, since it is larger than the sum of its proper divisors (801010687).

4005053405 is an equidigital number, since it uses as much as digits as its factorization.

4005053405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801010686.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 4005053405 is about 63285.4912677464. The cubic root of 4005053405 is about 1588.0692523576.

Adding to 4005053405 its reverse (5043505004), we get a palindrome (9048558409).

The spelling of 4005053405 in words is "four billion, five million, fifty-three thousand, four hundred five".