9745539549 has 4 divisors (see below), whose sum is σ = 12994052736. Its totient is φ = 6497026364.

The previous prime is 9745539521. The next prime is 9745539593. The reversal of 9745539549 is 9459355479.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9745539549 - 2⁷ = 9745539421 is a prime.

It is a super-2 number, since 2×9745539549² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9745539492 and 9745539501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9745539509) 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, 1624256589 + ... + 1624256594.

It is an arithmetic number, because the mean of its divisors is an integer number (3248513184).

Almost surely, 2^9745539549 is an apocalyptic number.

It is an amenable number.

9745539549 is a deficient number, since it is larger than the sum of its proper divisors (3248513187).

9745539549 is a wasteful number, since it uses less digits than its factorization.

9745539549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248513186.

The product of its digits is 30618000, while the sum is 60.

The square root of 9745539549 is about 98719.4993352377. The cubic root of 9745539549 is about 2136.0035136411.

The spelling of 9745539549 in words is "nine billion, seven hundred forty-five million, five hundred thirty-nine thousand, five hundred forty-nine".