4431685 has 4 divisors (see below), whose sum is σ = 5318028. Its totient is φ = 3545344.

The previous prime is 4431683. The next prime is 4431697. The reversal of 4431685 is 5861344.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2259009 + 2172676 = 1503^2 + 1474^2 .

It is a cyclic number.

It is not a de Polignac number, because 4431685 - 2¹ = 4431683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4431683) 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, 443164 + ... + 443173.

It is an arithmetic number, because the mean of its divisors is an integer number (1329507).

Almost surely, 2^4431685 is an apocalyptic number.

It is an amenable number.

4431685 is a deficient number, since it is larger than the sum of its proper divisors (886343).

4431685 is an equidigital number, since it uses as much as digits as its factorization.

4431685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886342.

The product of its digits is 11520, while the sum is 31.

The square root of 4431685 is about 2105.1567637589. The cubic root of 4431685 is about 164.2566500029.

The spelling of 4431685 in words is "four million, four hundred thirty-one thousand, six hundred eighty-five".