9986644823 has 8 divisors (see below), whose sum is σ = 10560230016. Its totient is φ = 9428774400.

The previous prime is 9986644793. The next prime is 9986644859. The reversal of 9986644823 is 3284466899.

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 9986644823 - 2⁸ = 9986644567 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 (9986646823) 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, 3927386 + ... + 3929927.

It is an arithmetic number, because the mean of its divisors is an integer number (1320028752).

Almost surely, 2^9986644823 is an apocalyptic number.

9986644823 is a deficient number, since it is larger than the sum of its proper divisors (573585193).

9986644823 is a wasteful number, since it uses less digits than its factorization.

9986644823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7857385.

The product of its digits is 17915904, while the sum is 59.

The square root of 9986644823 is about 99933.2018050057. The cubic root of 9986644823 is about 2153.4751675313.

The spelling of 9986644823 in words is "nine billion, nine hundred eighty-six million, six hundred forty-four thousand, eight hundred twenty-three".