9649449653 has 4 divisors (see below), whose sum is σ = 9649897068. Its totient is φ = 9649002240.

The previous prime is 9649449637. The next prime is 9649449709. The reversal of 9649449653 is 3569449469.

It is a happy number.

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 6876058084 + 2773391569 = 82922^2 + 52663^2 .

It is a cyclic number.

It is not a de Polignac number, because 9649449653 - 2⁴ = 9649449637 is a prime.

It is a super-2 number, since 2×9649449653² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9649449592 and 9649449601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9649449613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189626 + ... + 235067.

It is an arithmetic number, because the mean of its divisors is an integer number (2412474267).

Almost surely, 2^9649449653 is an apocalyptic number.

It is an amenable number.

9649449653 is a deficient number, since it is larger than the sum of its proper divisors (447415).

9649449653 is a wasteful number, since it uses less digits than its factorization.

9649449653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447414.

The product of its digits is 25194240, while the sum is 59.

The square root of 9649449653 is about 98231.6122895272. The cubic root of 9649449653 is about 2128.9600640343.

The spelling of 9649449653 in words is "nine billion, six hundred forty-nine million, four hundred forty-nine thousand, six hundred fifty-three".