9641215247 has 4 divisors (see below), whose sum is σ = 9641854056. Its totient is φ = 9640576440.

The previous prime is 9641215169. The next prime is 9641215289. The reversal of 9641215247 is 7425121469.

9641215247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9641215247 - 2¹⁴ = 9641198863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9641217247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296204 + ... + 327137.

It is an arithmetic number, because the mean of its divisors is an integer number (2410463514).

Almost surely, 2^9641215247 is an apocalyptic number.

9641215247 is a deficient number, since it is larger than the sum of its proper divisors (638809).

9641215247 is a wasteful number, since it uses less digits than its factorization.

9641215247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638808.

The product of its digits is 120960, while the sum is 41.

The square root of 9641215247 is about 98189.6901257968. The cubic root of 9641215247 is about 2128.3543054621.

The spelling of 9641215247 in words is "nine billion, six hundred forty-one million, two hundred fifteen thousand, two hundred forty-seven".