4309389 has 24 divisors (see below), whose sum is σ = 7344960. Its totient is φ = 2446200.

The previous prime is 4309369. The next prime is 4309391. The reversal of 4309389 is 9839034.

It is not a de Polignac number, because 4309389 - 2¹³ = 4301197 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4309309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28464 + ... + 28614.

It is an arithmetic number, because the mean of its divisors is an integer number (306040).

Almost surely, 2^4309389 is an apocalyptic number.

It is an amenable number.

4309389 is a deficient number, since it is larger than the sum of its proper divisors (3035571).

4309389 is an equidigital number, since it uses as much as digits as its factorization.

4309389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 4309389 is about 2075.9067898150. The cubic root of 4309389 is about 162.7316019042.

The spelling of 4309389 in words is "four million, three hundred nine thousand, three hundred eighty-nine".