881990 has 16 divisors (see below), whose sum is σ = 1607040. Its totient is φ = 348480.

The previous prime is 881987. The next prime is 882017. The reversal of 881990 is 99188.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 881990.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 395 + ... + 1385.

It is an arithmetic number, because the mean of its divisors is an integer number (100440).

2⁸⁸¹⁹⁹⁰ is an apocalyptic number.

881990 is a deficient number, since it is larger than the sum of its proper divisors (725050).

881990 is a wasteful number, since it uses less digits than its factorization.

881990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 881990 is about 939.1432265634. The cubic root of 881990 is about 95.9005770444.

The spelling of 881990 in words is "eight hundred eighty-one thousand, nine hundred ninety".