4309685 has 4 divisors (see below), whose sum is σ = 5171628. Its totient is φ = 3447744.

The previous prime is 4309673. The next prime is 4309693. The reversal of 4309685 is 5869034.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5869034 = 2 ⋅2934517.

It can be written as a sum of positive squares in 2 ways, for example, as 707281 + 3602404 = 841^2 + 1898^2 .

It is a cyclic number.

It is not a de Polignac number, because 4309685 - 2⁶ = 4309621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430964 + ... + 430973.

It is an arithmetic number, because the mean of its divisors is an integer number (1292907).

Almost surely, 2^4309685 is an apocalyptic number.

It is an amenable number.

4309685 is a deficient number, since it is larger than the sum of its proper divisors (861943).

4309685 is an equidigital number, since it uses as much as digits as its factorization.

4309685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861942.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 4309685 is about 2075.9780827359. The cubic root of 4309685 is about 162.7353276800.

It can be divided in two parts, 4309 and 685, that added together give a palindrome (4994).

The spelling of 4309685 in words is "four million, three hundred nine thousand, six hundred eighty-five".