8871381 has 6 divisors (see below), whose sum is σ = 12814230. Its totient is φ = 5914248.

The previous prime is 8871371. The next prime is 8871389. The reversal of 8871381 is 1831788.

It can be written as a sum of positive squares in only one way, i.e., 7452900 + 1418481 = 2730^2 + 1191^2 .

It is not a de Polignac number, because 8871381 - 2⁵ = 8871349 is a prime.

It is a super-2 number, since 2×8871381² = 157402801694322, which contains 22 as substring.

8871381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8871389) 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, 492846 + ... + 492863.

It is an arithmetic number, because the mean of its divisors is an integer number (2135705).

Almost surely, 2^8871381 is an apocalyptic number.

It is an amenable number.

8871381 is a deficient number, since it is larger than the sum of its proper divisors (3942849).

8871381 is a wasteful number, since it uses less digits than its factorization.

8871381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985715 (or 985712 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 8871381 is about 2978.4863605530. The cubic root of 8871381 is about 207.0127416367.

The spelling of 8871381 in words is "eight million, eight hundred seventy-one thousand, three hundred eighty-one".