881291 has 4 divisors (see below), whose sum is σ = 919632. Its totient is φ = 842952.

The previous prime is 881273. The next prime is 881311. The reversal of 881291 is 192188.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-881291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (881191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19136 + ... + 19181.

It is an arithmetic number, because the mean of its divisors is an integer number (229908).

2⁸⁸¹²⁹¹ is an apocalyptic number.

881291 is a deficient number, since it is larger than the sum of its proper divisors (38341).

881291 is a wasteful number, since it uses less digits than its factorization.

881291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38340.

The product of its digits is 1152, while the sum is 29.

The square root of 881291 is about 938.7710050912. The cubic root of 881291 is about 95.8752357821.

The spelling of 881291 in words is "eight hundred eighty-one thousand, two hundred ninety-one".