5209689 has 4 divisors (see below), whose sum is σ = 6946256. Its totient is φ = 3473124.

The previous prime is 5209679. The next prime is 5209709. The reversal of 5209689 is 9869025.

It is a happy number.

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.

It is not a de Polignac number, because 5209689 - 2⁵ = 5209657 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5209619) 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, 868279 + ... + 868284.

It is an arithmetic number, because the mean of its divisors is an integer number (1736564).

Almost surely, 2^5209689 is an apocalyptic number.

It is an amenable number.

5209689 is a deficient number, since it is larger than the sum of its proper divisors (1736567).

5209689 is a wasteful number, since it uses less digits than its factorization.

5209689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736566.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 5209689 is about 2282.4743152991. The cubic root of 5209689 is about 173.3553567513.

The spelling of 5209689 in words is "five million, two hundred nine thousand, six hundred eighty-nine".