4018669 has 4 divisors (see below), whose sum is σ = 4023196. Its totient is φ = 4014144.

The previous prime is 4018649. The next prime is 4018699. The reversal of 4018669 is 9668104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1857769 + 2160900 = 1363^2 + 1470^2 .

It is a cyclic number.

It is not a de Polignac number, because 4018669 - 2⁷ = 4018541 is a prime.

It is a super-2 number, since 2×4018669² = 32299401063122, which contains 22 as substring.

It is a Duffinian number.

4018669 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4018649) 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, 444 + ... + 2869.

It is an arithmetic number, because the mean of its divisors is an integer number (1005799).

Almost surely, 2^4018669 is an apocalyptic number.

It is an amenable number.

4018669 is a deficient number, since it is larger than the sum of its proper divisors (4527).

4018669 is a wasteful number, since it uses less digits than its factorization.

4018669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4526.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 4018669 is about 2004.6618168659. The cubic root of 4018669 is about 158.9866819007.

The spelling of 4018669 in words is "four million, eighteen thousand, six hundred sixty-nine".