8626656949 has 4 divisors (see below), whose sum is σ = 8627416864. Its totient is φ = 8625897036.

The previous prime is 8626656833. The next prime is 8626657031. The reversal of 8626656949 is 9496566268.

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-8626656949 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 (8726656949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362667 + ... + 385720.

It is an arithmetic number, because the mean of its divisors is an integer number (2156854216).

Almost surely, 2^8626656949 is an apocalyptic number.

It is an amenable number.

8626656949 is a deficient number, since it is larger than the sum of its proper divisors (759915).

8626656949 is a wasteful number, since it uses less digits than its factorization.

8626656949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759914.

The product of its digits is 33592320, while the sum is 61.

The square root of 8626656949 is about 92879.7983901774. The cubic root of 8626656949 is about 2050.9142817674.

The spelling of 8626656949 in words is "eight billion, six hundred twenty-six million, six hundred fifty-six thousand, nine hundred forty-nine".