9378997 has 4 divisors (see below), whose sum is σ = 9418156. Its totient is φ = 9339840.

The previous prime is 9378983. The next prime is 9379001. The reversal of 9378997 is 7998739.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7998739 = 7 ⋅1142677.

It can be written as a sum of positive squares in 2 ways, for example, as 3837681 + 5541316 = 1959^2 + 2354^2 .

It is a cyclic number.

It is not a de Polignac number, because 9378997 - 2⁷ = 9378869 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 (9378697) 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 3 ways as a sum of consecutive naturals, for example, 19218 + ... + 19699.

It is an arithmetic number, because the mean of its divisors is an integer number (2354539).

Almost surely, 2^9378997 is an apocalyptic number.

It is an amenable number.

9378997 is a deficient number, since it is larger than the sum of its proper divisors (39159).

9378997 is a wasteful number, since it uses less digits than its factorization.

9378997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39158.

The product of its digits is 857304, while the sum is 52.

The square root of 9378997 is about 3062.5148162907. The cubic root of 9378997 is about 210.8881282932. Note that the first 3 decimals are identical.

The spelling of 9378997 in words is "nine million, three hundred seventy-eight thousand, nine hundred ninety-seven".