9917398 has 8 divisors (see below), whose sum is σ = 14962608. Its totient is φ = 4929864.

The previous prime is 9917389. The next prime is 9917399. The reversal of 9917398 is 8937199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×9917398³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9917399) 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, 13986 + ... + 14677.

It is an arithmetic number, because the mean of its divisors is an integer number (1870326).

Almost surely, 2^9917398 is an apocalyptic number.

9917398 is a deficient number, since it is larger than the sum of its proper divisors (5045210).

9917398 is a wasteful number, since it uses less digits than its factorization.

9917398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28838.

The product of its digits is 122472, while the sum is 46.

The square root of 9917398 is about 3149.1900546013. The cubic root of 9917398 is about 214.8486260963.

The spelling of 9917398 in words is "nine million, nine hundred seventeen thousand, three hundred ninety-eight".