9856423659 has 8 divisors (see below), whose sum is σ = 13914951120. Its totient is φ = 6184422656.

The previous prime is 9856423639. The next prime is 9856423669. The reversal of 9856423659 is 9563246589.

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

It is not a de Polignac number, because 9856423659 - 2¹³ = 9856415467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9856423599 and 9856423608.

It is not an unprimeable number, because it can be changed into a prime (9856423609) 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, 96631554 + ... + 96631655.

It is an arithmetic number, because the mean of its divisors is an integer number (1739368890).

Almost surely, 2^9856423659 is an apocalyptic number.

9856423659 is a deficient number, since it is larger than the sum of its proper divisors (4058527461).

9856423659 is a wasteful number, since it uses less digits than its factorization.

9856423659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193263229.

The product of its digits is 13996800, while the sum is 57.

The square root of 9856423659 is about 99279.5228584425. The cubic root of 9856423659 is about 2144.0740844299.

The spelling of 9856423659 in words is "nine billion, eight hundred fifty-six million, four hundred twenty-three thousand, six hundred fifty-nine".