8719281 has 6 divisors (see below), whose sum is σ = 12594530. Its totient is φ = 5812848.

The previous prime is 8719273. The next prime is 8719289. The reversal of 8719281 is 1829178.

It is an interprime number because it is at equal distance from previous prime (8719273) and next prime (8719289).

It can be written as a sum of positive squares in only one way, i.e., 8503056 + 216225 = 2916^2 + 465^2 .

It is not a de Polignac number, because 8719281 - 2³ = 8719273 is a prime.

It is a super-2 number, since 2×8719281² = 152051722313922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8719289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 484396 + ... + 484413.

Almost surely, 2^8719281 is an apocalyptic number.

It is an amenable number.

8719281 is a deficient number, since it is larger than the sum of its proper divisors (3875249).

8719281 is a wasteful number, since it uses less digits than its factorization.

8719281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968815 (or 968812 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 8719281 is about 2952.8428674753. The cubic root of 8719281 is about 205.8228360225.

The spelling of 8719281 in words is "eight million, seven hundred nineteen thousand, two hundred eighty-one".