881491 has 4 divisors (see below), whose sum is σ = 949312. Its totient is φ = 813672.

The previous prime is 881479. The next prime is 881509. The reversal of 881491 is 194188.

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

It is a cyclic number.

It is not a de Polignac number, because 881491 - 2¹⁷ = 750419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (881411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33891 + ... + 33916.

It is an arithmetic number, because the mean of its divisors is an integer number (237328).

2⁸⁸¹⁴⁹¹ is an apocalyptic number.

881491 is a deficient number, since it is larger than the sum of its proper divisors (67821).

881491 is a wasteful number, since it uses less digits than its factorization.

881491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67820.

The product of its digits is 2304, while the sum is 31.

The square root of 881491 is about 938.8775212987. The cubic root of 881491 is about 95.8824878690.

The spelling of 881491 in words is "eight hundred eighty-one thousand, four hundred ninety-one".