4345309 has 4 divisors (see below), whose sum is σ = 4390204. Its totient is φ = 4300416.

The previous prime is 4345307. The next prime is 4345337. The reversal of 4345309 is 9035434.

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 1612900 + 2732409 = 1270^2 + 1653^2 .

It is a cyclic number.

It is not a de Polignac number, because 4345309 - 2¹ = 4345307 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 (4345307) 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, 22302 + ... + 22495.

It is an arithmetic number, because the mean of its divisors is an integer number (1097551).

Almost surely, 2^4345309 is an apocalyptic number.

It is an amenable number.

4345309 is a deficient number, since it is larger than the sum of its proper divisors (44895).

4345309 is an equidigital number, since it uses as much as digits as its factorization.

4345309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44894.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 4345309 is about 2084.5404769397. The cubic root of 4345309 is about 163.1824897311.

The spelling of 4345309 in words is "four million, three hundred forty-five thousand, three hundred nine".