5209389 has 6 divisors (see below), whose sum is σ = 7524686. Its totient is φ = 3472920.

The previous prime is 5209387. The next prime is 5209397. The reversal of 5209389 is 9839025.

5209389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4473225 + 736164 = 2115^2 + 858^2 .

It is not a de Polignac number, because 5209389 - 2¹ = 5209387 is a prime.

It is a Duffinian number.

5209389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5209381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 289402 + ... + 289419.

Almost surely, 2^5209389 is an apocalyptic number.

It is an amenable number.

5209389 is a deficient number, since it is larger than the sum of its proper divisors (2315297).

5209389 is a wasteful number, since it uses less digits than its factorization.

5209389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578827 (or 578824 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 5209389 is about 2282.4085961983. The cubic root of 5209389 is about 173.3520291307.

The spelling of 5209389 in words is "five million, two hundred nine thousand, three hundred eighty-nine".