3929221885 has 8 divisors (see below), whose sum is σ = 4752193536. Its totient is φ = 3118626000.

The previous prime is 3929221871. The next prime is 3929221897. The reversal of 3929221885 is 5881229293.

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

It is not a de Polignac number, because 3929221885 - 2¹³ = 3929213693 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 7 ways as a sum of consecutive naturals, for example, 3093241 + ... + 3094510.

It is an arithmetic number, because the mean of its divisors is an integer number (594024192).

Almost surely, 2^3929221885 is an apocalyptic number.

It is an amenable number.

3929221885 is a deficient number, since it is larger than the sum of its proper divisors (822971651).

3929221885 is a wasteful number, since it uses less digits than its factorization.

3929221885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6187883.

The product of its digits is 622080, while the sum is 49.

The square root of 3929221885 is about 62683.5056853077. The cubic root of 3929221885 is about 1577.9825081606.

The spelling of 3929221885 in words is "three billion, nine hundred twenty-nine million, two hundred twenty-one thousand, eight hundred eighty-five".