8945197979 has 2 divisors, whose sum is σ = 8945197980. Its totient is φ = 8945197978.

The previous prime is 8945197969. The next prime is 8945197991. The reversal of 8945197979 is 9797915498.

8945197979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8945197979 - 2¹² = 8945193883 is a prime.

It is not a weakly prime, because it can be changed into another prime (8945197909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4472598989 + 4472598990.

It is an arithmetic number, because the mean of its divisors is an integer number (4472598990).

Almost surely, 2^8945197979 is an apocalyptic number.

8945197979 is a deficient number, since it is larger than the sum of its proper divisors (1).

8945197979 is an equidigital number, since it uses as much as digits as its factorization.

8945197979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51438240, while the sum is 68.

The square root of 8945197979 is about 94579.0567673415. The cubic root of 8945197979 is about 2075.8532691656.

The spelling of 8945197979 in words is "eight billion, nine hundred forty-five million, one hundred ninety-seven thousand, nine hundred seventy-nine".