8734979989 has 4 divisors (see below), whose sum is σ = 8816615424. Its totient is φ = 8653344556.

The previous prime is 8734979987. The next prime is 8734979999. The reversal of 8734979989 is 9899794378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8734979989 - 2¹ = 8734979987 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 (8734979983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40817557 + ... + 40817770.

It is an arithmetic number, because the mean of its divisors is an integer number (2204153856).

Almost surely, 2^8734979989 is an apocalyptic number.

It is an amenable number.

8734979989 is a deficient number, since it is larger than the sum of its proper divisors (81635435).

8734979989 is a wasteful number, since it uses less digits than its factorization.

8734979989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81635434.

The product of its digits is 246903552, while the sum is 73.

The square root of 8734979989 is about 93461.1148499738. The cubic root of 8734979989 is about 2059.4628936381.

The spelling of 8734979989 in words is "eight billion, seven hundred thirty-four million, nine hundred seventy-nine thousand, nine hundred eighty-nine".