4391991934 has 12 divisors (see below), whose sum is σ = 7241342472. Its totient is φ = 1996359860.

The previous prime is 4391991917. The next prime is 4391991937.

It is a happy number.

4391991934 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391991937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9074122 + ... + 9074605.

It is an arithmetic number, because the mean of its divisors is an integer number (603445206).

Almost surely, 2^4391991934 is an apocalyptic number.

4391991934 is a deficient number, since it is larger than the sum of its proper divisors (2849350538).

4391991934 is a wasteful number, since it uses less digits than its factorization.

4391991934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18148751 (or 18148740 counting only the distinct ones).

The product of its digits is 944784, while the sum is 52.

The square root of 4391991934 is about 66272.1052479850. The cubic root of 4391991934 is about 1637.6478194860.

The spelling of 4391991934 in words is "four billion, three hundred ninety-one million, nine hundred ninety-one thousand, nine hundred thirty-four".