9213640709 has 8 divisors (see below), whose sum is σ = 11339865600. Its totient is φ = 7289913456.

The previous prime is 9213640699. The next prime is 9213640741. The reversal of 9213640709 is 9070463129.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9213640709 - 2³² = 4918673413 is a prime.

It is a super-2 number, since 2×9213640709² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9213640309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50624309 + ... + 50624490.

It is an arithmetic number, because the mean of its divisors is an integer number (1417483200).

Almost surely, 2^9213640709 is an apocalyptic number.

It is an amenable number.

9213640709 is a deficient number, since it is larger than the sum of its proper divisors (2126224891).

9213640709 is a wasteful number, since it uses less digits than its factorization.

9213640709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101248819.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 9213640709 is about 95987.7112395123. The cubic root of 9213640709 is about 2096.4141911981.

The spelling of 9213640709 in words is "nine billion, two hundred thirteen million, six hundred forty thousand, seven hundred nine".