9876974977 has 2 divisors, whose sum is σ = 9876974978. Its totient is φ = 9876974976.

The previous prime is 9876974957. The next prime is 9876975041. The reversal of 9876974977 is 7794796789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6954058881 + 2922916096 = 83391^2 + 54064^2 .

It is a cyclic number.

It is not a de Polignac number, because 9876974977 - 2²³ = 9868586369 is a prime.

It is not a weakly prime, because it can be changed into another prime (9876974917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4938487488 + 4938487489.

It is an arithmetic number, because the mean of its divisors is an integer number (4938487489).

Almost surely, 2^9876974977 is an apocalyptic number.

It is an amenable number.

9876974977 is a deficient number, since it is larger than the sum of its proper divisors (1).

9876974977 is an equidigital number, since it uses as much as digits as its factorization.

9876974977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336063168, while the sum is 73.

The square root of 9876974977 is about 99382.9712626866. The cubic root of 9876974977 is about 2145.5632303278.

The spelling of 9876974977 in words is "nine billion, eight hundred seventy-six million, nine hundred seventy-four thousand, nine hundred seventy-seven".