8656242949 has 4 divisors (see below), whose sum is σ = 8656429036. Its totient is φ = 8656056864.

The previous prime is 8656242943. The next prime is 8656242953. The reversal of 8656242949 is 9492426568.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2919240900 + 5737002049 = 54030^2 + 75743^2 .

It is a cyclic number.

It is not a de Polignac number, because 8656242949 - 2²⁷ = 8522025221 is a prime.

It is a super-2 number, since 2×8656242949² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8656242949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8656242943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45217 + ... + 139129.

It is an arithmetic number, because the mean of its divisors is an integer number (2164107259).

Almost surely, 2^8656242949 is an apocalyptic number.

It is an amenable number.

8656242949 is a deficient number, since it is larger than the sum of its proper divisors (186087).

8656242949 is an equidigital number, since it uses as much as digits as its factorization.

8656242949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186086.

The product of its digits is 7464960, while the sum is 55.

The square root of 8656242949 is about 93038.9324369105. The cubic root of 8656242949 is about 2053.2562130870.

The spelling of 8656242949 in words is "eight billion, six hundred fifty-six million, two hundred forty-two thousand, nine hundred forty-nine".