8639981353 has 4 divisors (see below), whose sum is σ = 8678725888. Its totient is φ = 8601236820.

The previous prime is 8639981347. The next prime is 8639981419. The reversal of 8639981353 is 3531899368.

It is a happy number.

8639981353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8639981353 - 2¹⁷ = 8639850281 is a prime.

It is the 92952-nd Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8639981294 and 8639981303.

It is not an unprimeable number, because it can be changed into a prime (8639981153) by changing a digit.

It is a nontrivial repunit in base 92951.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19371933 + ... + 19372378.

It is an arithmetic number, because the mean of its divisors is an integer number (2169681472).

Almost surely, 2^8639981353 is an apocalyptic number.

It is an amenable number.

8639981353 is a deficient number, since it is larger than the sum of its proper divisors (38744535).

8639981353 is a wasteful number, since it uses less digits than its factorization.

8639981353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38744534.

The product of its digits is 4199040, while the sum is 55.

The square root of 8639981353 is about 92951.5000040344. The cubic root of 8639981353 is about 2051.9696598109.

The spelling of 8639981353 in words is "eight billion, six hundred thirty-nine million, nine hundred eighty-one thousand, three hundred fifty-three".