8664541949 has 4 divisors (see below), whose sum is σ = 9902333664. Its totient is φ = 7426750236.

The previous prime is 8664541939. The next prime is 8664541957. The reversal of 8664541949 is 9491454668.

8664541949 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 8664541949 - 2⁸ = 8664541693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8664541894 and 8664541903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8664541939) by changing a digit.

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, 618895847 + ... + 618895860.

It is an arithmetic number, because the mean of its divisors is an integer number (2475583416).

Almost surely, 2^8664541949 is an apocalyptic number.

It is an amenable number.

8664541949 is a deficient number, since it is larger than the sum of its proper divisors (1237791715).

8664541949 is a wasteful number, since it uses less digits than its factorization.

8664541949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237791714.

The product of its digits is 7464960, while the sum is 56.

The square root of 8664541949 is about 93083.5213611948. The cubic root of 8664541949 is about 2053.9121762931.

The spelling of 8664541949 in words is "eight billion, six hundred sixty-four million, five hundred forty-one thousand, nine hundred forty-nine".