9791913 has 4 divisors (see below), whose sum is σ = 13055888. Its totient is φ = 6527940.

The previous prime is 9791911. The next prime is 9791923. The reversal of 9791913 is 3191979.

9791913 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9791913 - 2¹ = 9791911 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (9791911) 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, 1631983 + ... + 1631988.

It is an arithmetic number, because the mean of its divisors is an integer number (3263972).

Almost surely, 2^9791913 is an apocalyptic number.

It is an amenable number.

9791913 is a deficient number, since it is larger than the sum of its proper divisors (3263975).

9791913 is a wasteful number, since it uses less digits than its factorization.

9791913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263974.

The product of its digits is 15309, while the sum is 39.

The square root of 9791913 is about 3129.2032532260. The cubic root of 9791913 is about 213.9386160449.

It can be divided in two parts, 9 and 791913, that multiplied together give a palindrome (7127217).

The spelling of 9791913 in words is "nine million, seven hundred ninety-one thousand, nine hundred thirteen".