9649713779 has 16 divisors (see below), whose sum is σ = 10492614720. Its totient is φ = 8846745600.

The previous prime is 9649713727. The next prime is 9649713803. The reversal of 9649713779 is 9773179469.

It is a cyclic number.

It is not a de Polignac number, because 9649713779 - 2¹⁶ = 9649648243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9649713709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38579 + ... + 144179.

It is an arithmetic number, because the mean of its divisors is an integer number (655788420).

Almost surely, 2^9649713779 is an apocalyptic number.

9649713779 is a deficient number, since it is larger than the sum of its proper divisors (842900941).

9649713779 is a wasteful number, since it uses less digits than its factorization.

9649713779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105790.

The product of its digits is 18003384, while the sum is 62.

The square root of 9649713779 is about 98232.9566846076. The cubic root of 9649713779 is about 2128.9794885817.

The spelling of 9649713779 in words is "nine billion, six hundred forty-nine million, seven hundred thirteen thousand, seven hundred seventy-nine".