9772955866 has 8 divisors (see below), whose sum is σ = 14677829460. Its totient is φ = 4880346048.

The previous prime is 9772955761. The next prime is 9772955873. The reversal of 9772955866 is 6685592779.

It can be written as a sum of positive squares in 2 ways, for example, as 9393680241 + 379275625 = 96921^2 + 19475^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 9772955798 and 9772955807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063951 + ... + 3067138.

Almost surely, 2^9772955866 is an apocalyptic number.

9772955866 is a deficient number, since it is larger than the sum of its proper divisors (4904873594).

9772955866 is a wasteful number, since it uses less digits than its factorization.

9772955866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6131888.

The product of its digits is 57153600, while the sum is 64.

The square root of 9772955866 is about 98858.2614959418. The cubic root of 9772955866 is about 2138.0046520271.

The spelling of 9772955866 in words is "nine billion, seven hundred seventy-two million, nine hundred fifty-five thousand, eight hundred sixty-six".