8445977 has 2 divisors, whose sum is σ = 8445978. Its totient is φ = 8445976.

The previous prime is 8445973. The next prime is 8445979. The reversal of 8445977 is 7795448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6071296 + 2374681 = 2464^2 + 1541^2 .

It is a cyclic number.

It is not a de Polignac number, because 8445977 - 2² = 8445973 is a prime.

Together with 8445979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8445971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4222988 + 4222989.

It is an arithmetic number, because the mean of its divisors is an integer number (4222989).

Almost surely, 2^8445977 is an apocalyptic number.

It is an amenable number.

8445977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8445977 is an equidigital number, since it uses as much as digits as its factorization.

8445977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 44.

The square root of 8445977 is about 2906.1963113320. The cubic root of 8445977 is about 203.6494765527.

The spelling of 8445977 in words is "eight million, four hundred forty-five thousand, nine hundred seventy-seven".