4308389 has 4 divisors (see below), whose sum is σ = 4312620. Its totient is φ = 4304160.

The previous prime is 4308379. The next prime is 4308397. The reversal of 4308389 is 9838034.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9838034 = 2 ⋅4919017.

It can be written as a sum of positive squares in 2 ways, for example, as 240100 + 4068289 = 490^2 + 2017^2 .

It is a cyclic number.

It is not a de Polignac number, because 4308389 - 2⁸ = 4308133 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 (4308319) 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, 449 + ... + 2969.

It is an arithmetic number, because the mean of its divisors is an integer number (1078155).

Almost surely, 2^4308389 is an apocalyptic number.

It is an amenable number.

4308389 is a deficient number, since it is larger than the sum of its proper divisors (4231).

4308389 is a wasteful number, since it uses less digits than its factorization.

4308389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4230.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 4308389 is about 2075.6659172420. The cubic root of 4308389 is about 162.7190135620.

The spelling of 4308389 in words is "four million, three hundred eight thousand, three hundred eighty-nine".