881389 has 4 divisors (see below), whose sum is σ = 895900. Its totient is φ = 866880.

The previous prime is 881369. The next prime is 881393. The reversal of 881389 is 983188.

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

It can be written as a sum of positive squares in 2 ways, for example, as 469225 + 412164 = 685^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 881389 - 2⁵ = 881357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7164 + ... + 7285.

It is an arithmetic number, because the mean of its divisors is an integer number (223975).

2⁸⁸¹³⁸⁹ is an apocalyptic number.

It is an amenable number.

881389 is a deficient number, since it is larger than the sum of its proper divisors (14511).

881389 is a wasteful number, since it uses less digits than its factorization.

881389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14510.

The product of its digits is 13824, while the sum is 37.

The square root of 881389 is about 938.8231995429. The cubic root of 881389 is about 95.8787894417.

The spelling of 881389 in words is "eight hundred eighty-one thousand, three hundred eighty-nine".