8479665989 has 8 divisors (see below), whose sum is σ = 8651917848. Its totient is φ = 8309145600.

The previous prime is 8479665983. The next prime is 8479666007. The reversal of 8479665989 is 9895669748.

It can be written as a sum of positive squares in 4 ways, for example, as 741472900 + 7738193089 = 27230^2 + 87967^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8479665989 - 2⁴ = 8479665973 is a prime.

It is a super-3 number, since 3×8479665989³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8479665983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422972 + ... + 442565.

It is an arithmetic number, because the mean of its divisors is an integer number (1081489731).

Almost surely, 2^8479665989 is an apocalyptic number.

It is an amenable number.

8479665989 is a deficient number, since it is larger than the sum of its proper divisors (172251859).

8479665989 is a wasteful number, since it uses less digits than its factorization.

8479665989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865735.

The product of its digits is 235146240, while the sum is 71.

The square root of 8479665989 is about 92085.1018840724. The cubic root of 8479665989 is about 2039.1988707587.

The spelling of 8479665989 in words is "eight billion, four hundred seventy-nine million, six hundred sixty-five thousand, nine hundred eighty-nine".