4005405106 has 4 divisors (see below), whose sum is σ = 6008107662. Its totient is φ = 2002702552.

The previous prime is 4005405097. The next prime is 4005405133. The reversal of 4005405106 is 6015045004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3986785881 + 18619225 = 63141^2 + 4315^2 .

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 as a sum of consecutive naturals, namely, 1001351275 + ... + 1001351278.

Almost surely, 2^4005405106 is an apocalyptic number.

4005405106 is a deficient number, since it is larger than the sum of its proper divisors (2002702556).

4005405106 is a wasteful number, since it uses less digits than its factorization.

4005405106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002702555.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 4005405106 is about 63288.2698926112. The cubic root of 4005405106 is about 1588.1157360654.

The spelling of 4005405106 in words is "four billion, five million, four hundred five thousand, one hundred six".