881979 has 8 divisors (see below), whose sum is σ = 1344000. Its totient is φ = 503976.

The previous prime is 881963. The next prime is 881983. The reversal of 881979 is 979188.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 881979 - 2⁴ = 881963 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

881979 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 881979.

It is not an unprimeable number, because it can be changed into a prime (881939) 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 7 ways as a sum of consecutive naturals, for example, 20979 + ... + 21020.

It is an arithmetic number, because the mean of its divisors is an integer number (168000).

2⁸⁸¹⁹⁷⁹ is an apocalyptic number.

881979 is a deficient number, since it is larger than the sum of its proper divisors (462021).

881979 is a wasteful number, since it uses less digits than its factorization.

881979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42009.

The product of its digits is 36288, while the sum is 42.

The square root of 881979 is about 939.1373701435. The cubic root of 881979 is about 95.9001783586.

The spelling of 881979 in words is "eight hundred eighty-one thousand, nine hundred seventy-nine".