4424021689 has 4 divisors (see below), whose sum is σ = 4442532480. Its totient is φ = 4405510900.

The previous prime is 4424021663. The next prime is 4424021747. The reversal of 4424021689 is 9861204244.

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 de Polignac number, because none of the positive numbers 2^k-4424021689 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4424021629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9255037 + ... + 9255514.

It is an arithmetic number, because the mean of its divisors is an integer number (1110633120).

Almost surely, 2^4424021689 is an apocalyptic number.

It is an amenable number.

4424021689 is a deficient number, since it is larger than the sum of its proper divisors (18510791).

4424021689 is a wasteful number, since it uses less digits than its factorization.

4424021689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18510790.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 4424021689 is about 66513.3196359947. The cubic root of 4424021689 is about 1641.6191733444.

The spelling of 4424021689 in words is "four billion, four hundred twenty-four million, twenty-one thousand, six hundred eighty-nine".