8479425649 has 2 divisors, whose sum is σ = 8479425650. Its totient is φ = 8479425648.

The previous prime is 8479425613. The next prime is 8479425707. The reversal of 8479425649 is 9465249748.

It is an a-pointer prime, because the next prime (8479425707) can be obtained adding 8479425649 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8465288049 + 14137600 = 92007^2 + 3760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8479425649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8479425593 and 8479425602.

It is not a weakly prime, because it can be changed into another prime (8479425349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4239712824 + 4239712825.

It is an arithmetic number, because the mean of its divisors is an integer number (4239712825).

Almost surely, 2^8479425649 is an apocalyptic number.

It is an amenable number.

8479425649 is a deficient number, since it is larger than the sum of its proper divisors (1).

8479425649 is an equidigital number, since it uses as much as digits as its factorization.

8479425649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 58.

The square root of 8479425649 is about 92083.7968863144. The cubic root of 8479425649 is about 2039.1796048392.

The spelling of 8479425649 in words is "eight billion, four hundred seventy-nine million, four hundred twenty-five thousand, six hundred forty-nine".