9913917 has 16 divisors (see below), whose sum is σ = 14309568. Its totient is φ = 6069120.

The previous prime is 9913901. The next prime is 9913919. The reversal of 9913917 is 7193199.

9913917 = 79² + 80² + ... + 311².

It is not a de Polignac number, because 9913917 - 2⁴ = 9913901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8542 + ... + 9632.

It is an arithmetic number, because the mean of its divisors is an integer number (894348).

Almost surely, 2^9913917 is an apocalyptic number.

It is an amenable number.

9913917 is a deficient number, since it is larger than the sum of its proper divisors (4395651).

9913917 is a wasteful number, since it uses less digits than its factorization.

9913917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

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

The square root of 9913917 is about 3148.6373243040. The cubic root of 9913917 is about 214.8234859138.

The spelling of 9913917 in words is "nine million, nine hundred thirteen thousand, nine hundred seventeen".