8391969670 has 32 divisors (see below), whose sum is σ = 17271955008. Its totient is φ = 2875834368.

The previous prime is 8391969643. The next prime is 8391969671. The reversal of 8391969670 is 769691938.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8391969671) 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 15 ways as a sum of consecutive naturals, for example, 119542 + ... + 176278.

It is an arithmetic number, because the mean of its divisors is an integer number (539748594).

Almost surely, 2^8391969670 is an apocalyptic number.

8391969670 is an abundant number, since it is smaller than the sum of its proper divisors (8879985338).

8391969670 is a wasteful number, since it uses less digits than its factorization.

8391969670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58864.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The square root of 8391969670 is about 91607.6943820769. The cubic root of 8391969670 is about 2032.1447294652.

The spelling of 8391969670 in words is "eight billion, three hundred ninety-one million, nine hundred sixty-nine thousand, six hundred seventy".