8609448977 has 2 divisors, whose sum is σ = 8609448978. Its totient is φ = 8609448976.

The previous prime is 8609448937. The next prime is 8609448989. The reversal of 8609448977 is 7798449068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7520184961 + 1089264016 = 86719^2 + 33004^2 .

It is a cyclic number.

It is not a de Polignac number, because 8609448977 - 2¹⁰ = 8609447953 is a prime.

It is a super-2 number, since 2×8609448977² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8609448937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4304724488 + 4304724489.

It is an arithmetic number, because the mean of its divisors is an integer number (4304724489).

Almost surely, 2^8609448977 is an apocalyptic number.

It is an amenable number.

8609448977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8609448977 is an equidigital number, since it uses as much as digits as its factorization.

8609448977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24385536, while the sum is 62.

The square root of 8609448977 is about 92787.1164386522. The cubic root of 8609448977 is about 2049.5496910574.

The spelling of 8609448977 in words is "eight billion, six hundred nine million, four hundred forty-eight thousand, nine hundred seventy-seven".