8861980 has 24 divisors (see below), whose sum is σ = 19590480. Its totient is φ = 3358080.

The previous prime is 8861929. The next prime is 8861987. The reversal of 8861980 is 891688.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8861987) by changing a digit.

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, 11281 + ... + 12040.

It is an arithmetic number, because the mean of its divisors is an integer number (816270).

Almost surely, 2^8861980 is an apocalyptic number.

It is an amenable number.

8861980 is an abundant number, since it is smaller than the sum of its proper divisors (10728500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8861980 is a wasteful number, since it uses less digits than its factorization.

8861980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23349 (or 23347 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 8861980 is about 2976.9077916523. The cubic root of 8861980 is about 206.9395920100.

The spelling of 8861980 in words is "eight million, eight hundred sixty-one thousand, nine hundred eighty".