8649444929 has 4 divisors (see below), whose sum is σ = 9025507776. Its totient is φ = 8273382084.

The previous prime is 8649444901. The next prime is 8649444989. The reversal of 8649444929 is 9294449468.

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 a de Polignac number, because none of the positive numbers 2^k-8649444929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8649444989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188031389 + ... + 188031434.

It is an arithmetic number, because the mean of its divisors is an integer number (2256376944).

Almost surely, 2^8649444929 is an apocalyptic number.

It is an amenable number.

8649444929 is a deficient number, since it is larger than the sum of its proper divisors (376062847).

8649444929 is a wasteful number, since it uses less digits than its factorization.

8649444929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376062846.

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

The square root of 8649444929 is about 93002.3920606347. The cubic root of 8649444929 is about 2052.7185767481.

The spelling of 8649444929 in words is "eight billion, six hundred forty-nine million, four hundred forty-four thousand, nine hundred twenty-nine".