9772964642 has 12 divisors (see below), whose sum is σ = 17052826230. Its totient is φ = 4188413376.

The previous prime is 9772964567. The next prime is 9772964647. The reversal of 9772964642 is 2464692779.

It can be written as a sum of positive squares in only one way, i.e., 8489963881 + 1283000761 = 92141^2 + 35819^2 .

It is not an unprimeable number, because it can be changed into a prime (9772964647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49861967 + ... + 49862162.

Almost surely, 2^9772964642 is an apocalyptic number.

9772964642 is a deficient number, since it is larger than the sum of its proper divisors (7279861588).

9772964642 is a wasteful number, since it uses less digits than its factorization.

9772964642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99724145 (or 99724138 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 56.

The square root of 9772964642 is about 98858.3058827128. The cubic root of 9772964642 is about 2138.0052919946.

The spelling of 9772964642 in words is "nine billion, seven hundred seventy-two million, nine hundred sixty-four thousand, six hundred forty-two".