8966021380 has 12 divisors (see below), whose sum is σ = 18828644940. Its totient is φ = 3586408544.

The previous prime is 8966021371. The next prime is 8966021381. The reversal of 8966021380 is 831206698.

It can be written as a sum of positive squares in 2 ways, for example, as 2460953664 + 6505067716 = 49608^2 + 80654^2 .

It is not an unprimeable number, because it can be changed into a prime (8966021381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224150515 + ... + 224150554.

It is an arithmetic number, because the mean of its divisors is an integer number (1569053745).

Almost surely, 2^8966021380 is an apocalyptic number.

It is an amenable number.

8966021380 is an abundant number, since it is smaller than the sum of its proper divisors (9862623560).

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

8966021380 is a wasteful number, since it uses less digits than its factorization.

8966021380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448301078 (or 448301076 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 8966021380 is about 94689.0774060029. The cubic root of 8966021380 is about 2077.4628041164.

The spelling of 8966021380 in words is "eight billion, nine hundred sixty-six million, twenty-one thousand, three hundred eighty".