9287881 has 2 divisors, whose sum is σ = 9287882. Its totient is φ = 9287880.

The previous prime is 9287869. The next prime is 9287939. The reversal of 9287881 is 1887829.

9287881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4840000 + 4447881 = 2200^2 + 2109^2 .

It is a cyclic number.

It is not a de Polignac number, because 9287881 - 2⁵ = 9287849 is a prime.

It is a super-2 number, since 2×9287881² = 172529466940322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9287821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4643940 + 4643941.

It is an arithmetic number, because the mean of its divisors is an integer number (4643941).

Almost surely, 2^9287881 is an apocalyptic number.

It is an amenable number.

9287881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9287881 is an equidigital number, since it uses as much as digits as its factorization.

9287881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 43.

The square root of 9287881 is about 3047.6025003271. The cubic root of 9287881 is about 210.2029858925.

Subtracting from 9287881 its product of digits (64512), we obtain a square (9223369 = 3037²).

The spelling of 9287881 in words is "nine million, two hundred eighty-seven thousand, eight hundred eighty-one".