9649782879469 has 4 divisors (see below), whose sum is σ = 9656263594780. Its totient is φ = 9643302164160.

The previous prime is 9649782879463. The next prime is 9649782879557.

9649782879469 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5703322514569 + 3946460364900 = 2388163^2 + 1986570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9649782879469 is a prime.

It is a super-2 number, since 2×9649782879469² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9649782879469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9649782879463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3240355422 + ... + 3240358399.

It is an arithmetic number, because the mean of its divisors is an integer number (2414065898695).

Almost surely, 2^{9649782879469} is an apocalyptic number.

It is an amenable number.

9649782879469 is a deficient number, since it is larger than the sum of its proper divisors (6480715311).

9649782879469 is a wasteful number, since it uses less digits than its factorization.

9649782879469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480715310.

The product of its digits is 23702740992, while the sum is 88.

The spelling of 9649782879469 in words is "nine trillion, six hundred forty-nine billion, seven hundred eighty-two million, eight hundred seventy-nine thousand, four hundred sixty-nine".