4431604 has 12 divisors (see below), whose sum is σ = 7799428. Its totient is φ = 2203200.

The previous prime is 4431587. The next prime is 4431641. The reversal of 4431604 is 4061344.

It is a happy number.

4431604 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 4210704 = 470^2 + 2052^2 .

It is a super-2 number, since 2×4431604² = 39278228025632, which contains 22 as substring.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2337 + ... + 3784.

Almost surely, 2^4431604 is an apocalyptic number.

It is an amenable number.

4431604 is a deficient number, since it is larger than the sum of its proper divisors (3367824).

4431604 is a wasteful number, since it uses less digits than its factorization.

4431604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6306 (or 6304 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4431604 is about 2105.1375251988. The cubic root of 4431604 is about 164.2556492647.

Adding to 4431604 its reverse (4061344), we get a palindrome (8492948).

The spelling of 4431604 in words is "four million, four hundred thirty-one thousand, six hundred four".