9679878589 has 6 divisors (see below), whose sum is σ = 9690751994. Its totient is φ = 9669017280.

The previous prime is 9679878583. The next prime is 9679878623. The reversal of 9679878589 is 9858789769.

It can be written as a sum of positive squares in 3 ways, for example, as 4480026489 + 5199852100 = 66933^2 + 72110^2 .

It is not a de Polignac number, because 9679878589 - 2¹¹ = 9679876541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9679878583) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 949459 + ... + 959599.

Almost surely, 2^9679878589 is an apocalyptic number.

It is an amenable number.

9679878589 is a deficient number, since it is larger than the sum of its proper divisors (10873405).

9679878589 is an frugal number, since it uses more digits than its factorization.

9679878589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12095 (or 11118 counting only the distinct ones).

The product of its digits is 548674560, while the sum is 76.

The square root of 9679878589 is about 98386.3740006715. The cubic root of 9679878589 is about 2131.1955633146.

The spelling of 9679878589 in words is "nine billion, six hundred seventy-nine million, eight hundred seventy-eight thousand, five hundred eighty-nine".