9917894 has 12 divisors (see below), whose sum is σ = 17305884. Its totient is φ = 4250484.

The previous prime is 9917891. The next prime is 9917903. The reversal of 9917894 is 4987199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9917891) 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 5 ways as a sum of consecutive naturals, for example, 50504 + ... + 50699.

It is an arithmetic number, because the mean of its divisors is an integer number (1442157).

Almost surely, 2^9917894 is an apocalyptic number.

9917894 is a deficient number, since it is larger than the sum of its proper divisors (7387990).

9917894 is a wasteful number, since it uses less digits than its factorization.

9917894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101219 (or 101212 counting only the distinct ones).

The product of its digits is 163296, while the sum is 47.

The square root of 9917894 is about 3149.2688040242. The cubic root of 9917894 is about 214.8522077865.

The spelling of 9917894 in words is "nine million, nine hundred seventeen thousand, eight hundred ninety-four".