4430018 has 4 divisors (see below), whose sum is σ = 6645030. Its totient is φ = 2215008.

The previous prime is 4430017. The next prime is 4430033. The reversal of 4430018 is 8100344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3892729 + 537289 = 1973^2 + 733^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4430017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107503 + ... + 1107506.

Almost surely, 2^4430018 is an apocalyptic number.

4430018 is a deficient number, since it is larger than the sum of its proper divisors (2215012).

4430018 is a wasteful number, since it uses less digits than its factorization.

4430018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215011.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4430018 is about 2104.7607940096. The cubic root of 4430018 is about 164.2360521058.

The spelling of 4430018 in words is "four million, four hundred thirty thousand, eighteen".