9640384471 has 4 divisors (see below), whose sum is σ = 9643652032. Its totient is φ = 9637116912.

The previous prime is 9640384423. The next prime is 9640384477. The reversal of 9640384471 is 1744830469.

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 9640384471 - 2¹³ = 9640376279 is a prime.

It is a super-3 number, since 3×9640384471³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640384477) 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, 1629351 + ... + 1635256.

It is an arithmetic number, because the mean of its divisors is an integer number (2410913008).

Almost surely, 2^9640384471 is an apocalyptic number.

9640384471 is a deficient number, since it is larger than the sum of its proper divisors (3267561).

9640384471 is a wasteful number, since it uses less digits than its factorization.

9640384471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267560.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 9640384471 is about 98185.4595701421. The cubic root of 9640384471 is about 2128.2931708291.

The spelling of 9640384471 in words is "nine billion, six hundred forty million, three hundred eighty-four thousand, four hundred seventy-one".