9871361 has 4 divisors (see below), whose sum is σ = 10189824. Its totient is φ = 9552900.

The previous prime is 9871357. The next prime is 9871391. The reversal of 9871361 is 1631789.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1631789 = 853 ⋅1913.

It is a cyclic number.

It is not a de Polignac number, because 9871361 - 2² = 9871357 is a prime.

It is a super-4 number, since 4×9871361⁴ (a number of 29 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (9871321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159185 + ... + 159246.

It is an arithmetic number, because the mean of its divisors is an integer number (2547456).

It is a Proth number, since it is equal to 1205 ⋅ 2¹³ + 1 and 1205 < 2¹³.

Almost surely, 2^9871361 is an apocalyptic number.

It is an amenable number.

9871361 is a deficient number, since it is larger than the sum of its proper divisors (318463).

9871361 is a wasteful number, since it uses less digits than its factorization.

9871361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318462.

The product of its digits is 9072, while the sum is 35.

The square root of 9871361 is about 3141.8722125510. The cubic root of 9871361 is about 214.5156647493.

The spelling of 9871361 in words is "nine million, eight hundred seventy-one thousand, three hundred sixty-one".