4433989 has 4 divisors (see below), whose sum is σ = 5067424. Its totient is φ = 3800556.

The previous prime is 4433981. The next prime is 4433999. The reversal of 4433989 is 9893344.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4433989 - 2³ = 4433981 is a prime.

It is a Duffinian number.

4433989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4433981) 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, 316707 + ... + 316720.

It is an arithmetic number, because the mean of its divisors is an integer number (1266856).

Almost surely, 2^4433989 is an apocalyptic number.

It is an amenable number.

4433989 is a deficient number, since it is larger than the sum of its proper divisors (633435).

4433989 is an equidigital number, since it uses as much as digits as its factorization.

4433989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633434.

The product of its digits is 93312, while the sum is 40.

The square root of 4433989 is about 2105.7039203079. The cubic root of 4433989 is about 164.2851103407.

The spelling of 4433989 in words is "four million, four hundred thirty-three thousand, nine hundred eighty-nine".