8195977 has 2 divisors, whose sum is σ = 8195978. Its totient is φ = 8195976.

The previous prime is 8195969. The next prime is 8196007. The reversal of 8195977 is 7795918.

8195977 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4447881 + 3748096 = 2109^2 + 1936^2 .

It is a cyclic number.

It is not a de Polignac number, because 8195977 - 2³ = 8195969 is a prime.

It is not a weakly prime, because it can be changed into another prime (8195917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4097988 + 4097989.

It is an arithmetic number, because the mean of its divisors is an integer number (4097989).

Almost surely, 2^8195977 is an apocalyptic number.

It is an amenable number.

8195977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8195977 is an equidigital number, since it uses as much as digits as its factorization.

8195977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 46.

The square root of 8195977 is about 2862.8616802074. The cubic root of 8195977 is about 201.6199844896.

The spelling of 8195977 in words is "eight million, one hundred ninety-five thousand, nine hundred seventy-seven".