9166399 has 4 divisors (see below), whose sum is σ = 9999720. Its totient is φ = 8333080.

The previous prime is 9166393. The next prime is 9166427. The reversal of 9166399 is 9936619.

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

It is a cyclic number.

It is not a de Polignac number, because 9166399 - 2¹³ = 9158207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9166393) 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, 416644 + ... + 416665.

It is an arithmetic number, because the mean of its divisors is an integer number (2499930).

Almost surely, 2^9166399 is an apocalyptic number.

9166399 is a deficient number, since it is larger than the sum of its proper divisors (833321).

9166399 is a wasteful number, since it uses less digits than its factorization.

9166399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833320.

The product of its digits is 78732, while the sum is 43.

The square root of 9166399 is about 3027.6061500796. The cubic root of 9166399 is about 209.2825022180.

The spelling of 9166399 in words is "nine million, one hundred sixty-six thousand, three hundred ninety-nine".