4394018 has 8 divisors (see below), whose sum is σ = 6715548. Its totient is φ = 2155504.

The previous prime is 4393999. The next prime is 4394021. The reversal of 4394018 is 8104934.

It can be written as a sum of positive squares in 2 ways, for example, as 4313929 + 80089 = 2077^2 + 283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20621 + ... + 20832.

Almost surely, 2^4394018 is an apocalyptic number.

4394018 is a deficient number, since it is larger than the sum of its proper divisors (2321530).

4394018 is a wasteful number, since it uses less digits than its factorization.

4394018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41508.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 4394018 is about 2096.1913080633. The cubic root of 4394018 is about 163.7899601407.

The spelling of 4394018 in words is "four million, three hundred ninety-four thousand, eighteen".