4385309 has 4 divisors (see below), whose sum is σ = 4389504. Its totient is φ = 4381116.

The previous prime is 4385287. The next prime is 4385317. The reversal of 4385309 is 9035834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4385309 - 2¹⁶ = 4319773 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 (4385389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884 + ... + 3090.

It is an arithmetic number, because the mean of its divisors is an integer number (1097376).

Almost surely, 2^4385309 is an apocalyptic number.

It is an amenable number.

4385309 is a deficient number, since it is larger than the sum of its proper divisors (4195).

4385309 is a wasteful number, since it uses less digits than its factorization.

4385309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 4385309 is about 2094.1129386927. The cubic root of 4385309 is about 163.6816773029.

The spelling of 4385309 in words is "four million, three hundred eighty-five thousand, three hundred nine".