4421001989 has 2 divisors, whose sum is σ = 4421001990. Its totient is φ = 4421001988.

The previous prime is 4421001967. The next prime is 4421002007. The reversal of 4421001989 is 9891001244.

4421001989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3236472100 + 1184529889 = 56890^2 + 34417^2 .

It is a cyclic number.

It is not a de Polignac number, because 4421001989 - 2³² = 126034693 is a prime.

It is a super-2 number, since 2×4421001989² = 39090517173483912242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4421001289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210500994 + 2210500995.

It is an arithmetic number, because the mean of its divisors is an integer number (2210500995).

Almost surely, 2^4421001989 is an apocalyptic number.

It is an amenable number.

4421001989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4421001989 is an equidigital number, since it uses as much as digits as its factorization.

4421001989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 4421001989 is about 66490.6157965167. The cubic root of 4421001989 is about 1641.2455822192.

The spelling of 4421001989 in words is "four billion, four hundred twenty-one million, one thousand, nine hundred eighty-nine".