9787913 has 4 divisors (see below), whose sum is σ = 9922068. Its totient is φ = 9653760.

The previous prime is 9787901. The next prime is 9787931. The reversal of 9787913 is 3197879.

9787913 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3892729 + 5895184 = 1973^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 9787913 - 2⁶ = 9787849 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9787933) 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, 66968 + ... + 67113.

It is an arithmetic number, because the mean of its divisors is an integer number (2480517).

Almost surely, 2^9787913 is an apocalyptic number.

It is an amenable number.

9787913 is a deficient number, since it is larger than the sum of its proper divisors (134155).

9787913 is a wasteful number, since it uses less digits than its factorization.

9787913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134154.

The product of its digits is 95256, while the sum is 44.

The square root of 9787913 is about 3128.5640476103. The cubic root of 9787913 is about 213.9094807433.

The spelling of 9787913 in words is "nine million, seven hundred eighty-seven thousand, nine hundred thirteen".