8887381 has 2 divisors, whose sum is σ = 8887382. Its totient is φ = 8887380.

The previous prime is 8887367. The next prime is 8887387. The reversal of 8887381 is 1837888.

8887381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5880625 + 3006756 = 2425^2 + 1734^2 .

It is a cyclic number.

It is not a de Polignac number, because 8887381 - 2¹¹ = 8885333 is a prime.

It is a super-2 number, since 2×8887381² = 157971082078322, which contains 22 as substring.

8887381 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8887387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4443690 + 4443691.

It is an arithmetic number, because the mean of its divisors is an integer number (4443691).

Almost surely, 2^8887381 is an apocalyptic number.

It is an amenable number.

8887381 is a deficient number, since it is larger than the sum of its proper divisors (1).

8887381 is an equidigital number, since it uses as much as digits as its factorization.

8887381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 43.

The square root of 8887381 is about 2981.1710786199. The cubic root of 8887381 is about 207.1371196644.

The spelling of 8887381 in words is "eight million, eight hundred eighty-seven thousand, three hundred eighty-one".