8620449559 has 2 divisors, whose sum is σ = 8620449560. Its totient is φ = 8620449558.

The previous prime is 8620449557. The next prime is 8620449583. The reversal of 8620449559 is 9559440268.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8620449559 - 2¹ = 8620449557 is a prime.

Together with 8620449557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8620449557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4310224779 + 4310224780.

It is an arithmetic number, because the mean of its divisors is an integer number (4310224780).

Almost surely, 2^8620449559 is an apocalyptic number.

8620449559 is a deficient number, since it is larger than the sum of its proper divisors (1).

8620449559 is an equidigital number, since it uses as much as digits as its factorization.

8620449559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The square root of 8620449559 is about 92846.3761220652. The cubic root of 8620449559 is about 2050.4222456817.

The spelling of 8620449559 in words is "eight billion, six hundred twenty million, four hundred forty-nine thousand, five hundred fifty-nine".