9876397 has 4 divisors (see below), whose sum is σ = 9933660. Its totient is φ = 9819136.

The previous prime is 9876379. The next prime is 9876413. The reversal of 9876397 is 7936789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7936789 = 7 ⋅1133827.

It can be written as a sum of positive squares in 2 ways, for example, as 6869641 + 3006756 = 2621^2 + 1734^2 .

It is a cyclic number.

It is not a de Polignac number, because 9876397 - 2¹¹ = 9874349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9876397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9816397) 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, 28372 + ... + 28717.

It is an arithmetic number, because the mean of its divisors is an integer number (2483415).

Almost surely, 2^9876397 is an apocalyptic number.

It is an amenable number.

9876397 is a deficient number, since it is larger than the sum of its proper divisors (57263).

9876397 is a wasteful number, since it uses less digits than its factorization.

9876397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57262.

The product of its digits is 571536, while the sum is 49.

The square root of 9876397 is about 3142.6735433385. The cubic root of 9876397 is about 214.5521378432.

The spelling of 9876397 in words is "nine million, eight hundred seventy-six thousand, three hundred ninety-seven".