9679512977 has 2 divisors, whose sum is σ = 9679512978. Its totient is φ = 9679512976.

The previous prime is 9679512971. The next prime is 9679513009. The reversal of 9679512977 is 7792159769.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9179364481 + 500148496 = 95809^2 + 22364^2 .

It is a cyclic number.

It is not a de Polignac number, because 9679512977 - 2²⁰ = 9678464401 is a prime.

It is a super-2 number, since 2×9679512977² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9679512971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4839756488 + 4839756489.

It is an arithmetic number, because the mean of its divisors is an integer number (4839756489).

Almost surely, 2^9679512977 is an apocalyptic number.

It is an amenable number.

9679512977 is a deficient number, since it is larger than the sum of its proper divisors (1).

9679512977 is an equidigital number, since it uses as much as digits as its factorization.

9679512977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15002820, while the sum is 62.

The square root of 9679512977 is about 98384.5159412801. The cubic root of 9679512977 is about 2131.1687310055.

The spelling of 9679512977 in words is "nine billion, six hundred seventy-nine million, five hundred twelve thousand, nine hundred seventy-seven".