9976105897 has 2 divisors, whose sum is σ = 9976105898. Its totient is φ = 9976105896.

The previous prime is 9976105883. The next prime is 9976105949. The reversal of 9976105897 is 7985016799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6185979801 + 3790126096 = 78651^2 + 61564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9976105897 is a prime.

It is not a weakly prime, because it can be changed into another prime (9979105897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4988052948 + 4988052949.

It is an arithmetic number, because the mean of its divisors is an integer number (4988052949).

Almost surely, 2^9976105897 is an apocalyptic number.

It is an amenable number.

9976105897 is a deficient number, since it is larger than the sum of its proper divisors (1).

9976105897 is an equidigital number, since it uses as much as digits as its factorization.

9976105897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8573040, while the sum is 61.

The square root of 9976105897 is about 99880.4580335913. The cubic root of 9976105897 is about 2152.7173787046.

The spelling of 9976105897 in words is "nine billion, nine hundred seventy-six million, one hundred five thousand, eight hundred ninety-seven".