4205840404 has 12 divisors (see below), whose sum is σ = 7367761044. Its totient is φ = 2100765824.

The previous prime is 4205840389. The next prime is 4205840413. The reversal of 4205840404 is 4040485024.

It can be written as a sum of positive squares in 2 ways, for example, as 2569476100 + 1636364304 = 50690^2 + 40452^2 .

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, 534199 + ... + 542014.

It is an arithmetic number, because the mean of its divisors is an integer number (613980087).

Almost surely, 2^4205840404 is an apocalyptic number.

It is an amenable number.

4205840404 is a deficient number, since it is larger than the sum of its proper divisors (3161920640).

4205840404 is a wasteful number, since it uses less digits than its factorization.

4205840404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077194 (or 1077192 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 4205840404 is about 64852.4510253853. The cubic root of 4205840404 is about 1614.1761627441.

The spelling of 4205840404 in words is "four billion, two hundred five million, eight hundred forty thousand, four hundred four".