881890979 has 4 divisors (see below), whose sum is σ = 881969376. Its totient is φ = 881812584.

The previous prime is 881890949. The next prime is 881890981. The reversal of 881890979 is 979098188.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 881890979 - 2¹⁶ = 881825443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (881890949) 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, 18779 + ... + 46004.

It is an arithmetic number, because the mean of its divisors is an integer number (220492344).

Almost surely, 2^881890979 is an apocalyptic number.

881890979 is a deficient number, since it is larger than the sum of its proper divisors (78397).

881890979 is a wasteful number, since it uses less digits than its factorization.

881890979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78396.

The product of its (nonzero) digits is 2612736, while the sum is 59.

The square root of 881890979 is about 29696.6492891033. The cubic root of 881890979 is about 958.9698799149.

The spelling of 881890979 in words is "eight hundred eighty-one million, eight hundred ninety thousand, nine hundred seventy-nine".