3904221885 has 16 divisors (see below), whose sum is σ = 6305138496. Its totient is φ = 2062790528.

The previous prime is 3904221863. The next prime is 3904221943. The reversal of 3904221885 is 5881224093.

It is a cyclic number.

It is not a de Polignac number, because 3904221885 - 2⁷ = 3904221757 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 15 ways as a sum of consecutive naturals, for example, 1214664 + ... + 1217873.

It is an arithmetic number, because the mean of its divisors is an integer number (394071156).

Almost surely, 2^3904221885 is an apocalyptic number.

It is an amenable number.

3904221885 is a deficient number, since it is larger than the sum of its proper divisors (2400916611).

3904221885 is a wasteful number, since it uses less digits than its factorization.

3904221885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432652.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 3904221885 is about 62483.7729734689. The cubic root of 3904221885 is about 1574.6287036073.

The spelling of 3904221885 in words is "three billion, nine hundred four million, two hundred twenty-one thousand, eight hundred eighty-five".