9713919621 has 16 divisors (see below), whose sum is σ = 14804135424. Its totient is φ = 5550071664.

The previous prime is 9713919577. The next prime is 9713919643. The reversal of 9713919621 is 1269193179.

9713919621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9713919621 - 2⁹ = 9713919109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9713919421) 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 15 ways as a sum of consecutive naturals, for example, 157246 + ... + 210128.

It is an arithmetic number, because the mean of its divisors is an integer number (925258464).

Almost surely, 2^9713919621 is an apocalyptic number.

It is an amenable number.

9713919621 is a deficient number, since it is larger than the sum of its proper divisors (5090215803).

9713919621 is a wasteful number, since it uses less digits than its factorization.

9713919621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61640.

The product of its digits is 183708, while the sum is 48.

The square root of 9713919621 is about 98559.2188534386. The cubic root of 9713919621 is about 2133.6908845337.

The spelling of 9713919621 in words is "nine billion, seven hundred thirteen million, nine hundred nineteen thousand, six hundred twenty-one".