4221020984 has 64 divisors (see below), whose sum is σ = 8489124000. Its totient is φ = 1960648704.

The previous prime is 4221020983. The next prime is 4221021031. The reversal of 4221020984 is 4890201224.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4221020984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221020983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5363039 + ... + 5363825.

Almost surely, 2^4221020984 is an apocalyptic number.

It is an amenable number.

4221020984 is an abundant number, since it is smaller than the sum of its proper divisors (4268103016).

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

4221020984 is a wasteful number, since it uses less digits than its factorization.

4221020984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 4221020984 is about 64969.3849747710. The cubic root of 4221020984 is about 1616.1159025046.

The spelling of 4221020984 in words is "four billion, two hundred twenty-one million, twenty thousand, nine hundred eighty-four".