4391271788 has 12 divisors (see below), whose sum is σ = 7733674032. Its totient is φ = 2181650640.

The previous prime is 4391271769. The next prime is 4391271893. The reversal of 4391271788 is 8871721934.

It is a happy 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, 3495608 + ... + 3496863.

It is an arithmetic number, because the mean of its divisors is an integer number (644472836).

Almost surely, 2^4391271788 is an apocalyptic number.

It is an amenable number.

4391271788 is a deficient number, since it is larger than the sum of its proper divisors (3342402244).

4391271788 is a wasteful number, since it uses less digits than its factorization.

4391271788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6992632 (or 6992630 counting only the distinct ones).

The product of its digits is 677376, while the sum is 50.

The square root of 4391271788 is about 66266.6717739770. The cubic root of 4391271788 is about 1637.5583073308.

The spelling of 4391271788 in words is "four billion, three hundred ninety-one million, two hundred seventy-one thousand, seven hundred eighty-eight".