9618397 has 4 divisors (see below), whose sum is σ = 9683100. Its totient is φ = 9553696.

The previous prime is 9618391. The next prime is 9618403. The reversal of 9618397 is 7938169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7938169 = 1367 ⋅5807.

It is an interprime number because it is at equal distance from previous prime (9618391) and next prime (9618403).

It can be written as a sum of positive squares in 2 ways, for example, as 443556 + 9174841 = 666^2 + 3029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9618397 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 (9618391) 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, 32128 + ... + 32425.

It is an arithmetic number, because the mean of its divisors is an integer number (2420775).

Almost surely, 2^9618397 is an apocalyptic number.

It is an amenable number.

9618397 is a deficient number, since it is larger than the sum of its proper divisors (64703).

9618397 is a wasteful number, since it uses less digits than its factorization.

9618397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64702.

The product of its digits is 81648, while the sum is 43.

The square root of 9618397 is about 3101.3540591168. The cubic root of 9618397 is about 212.6673892178.

The spelling of 9618397 in words is "nine million, six hundred eighteen thousand, three hundred ninety-seven".