9713228440 has 32 divisors (see below), whose sum is σ = 22804973280. Its totient is φ = 3716365312.

The previous prime is 9713228411. The next prime is 9713228449. The reversal of 9713228440 is 448223179.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 9713228393 and 9713228402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9713228449) 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, 5278009 + ... + 5279848.

It is an arithmetic number, because the mean of its divisors is an integer number (712655415).

Almost surely, 2^9713228440 is an apocalyptic number.

It is an amenable number.

9713228440 is an abundant number, since it is smaller than the sum of its proper divisors (13091744840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9713228440 is a wasteful number, since it uses less digits than its factorization.

9713228440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557891 (or 10557887 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 9713228440 is about 98555.7123661536. The cubic root of 9713228440 is about 2133.6402766900.

The spelling of 9713228440 in words is "nine billion, seven hundred thirteen million, two hundred twenty-eight thousand, four hundred forty".