8391742964 has 24 divisors (see below), whose sum is σ = 16179228576. Its totient is φ = 3776660000.

The previous prime is 8391742949. The next prime is 8391742987. The reversal of 8391742964 is 4692471938.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939722 + ... + 948609.

It is an arithmetic number, because the mean of its divisors is an integer number (674134524).

Almost surely, 2^8391742964 is an apocalyptic number.

It is an amenable number.

8391742964 is a deficient number, since it is larger than the sum of its proper divisors (7787485612).

8391742964 is a wasteful number, since it uses less digits than its factorization.

8391742964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888447 (or 1888445 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The square root of 8391742964 is about 91606.4569994932. The cubic root of 8391742964 is about 2032.1264300842.

The spelling of 8391742964 in words is "eight billion, three hundred ninety-one million, seven hundred forty-two thousand, nine hundred sixty-four".