5123689 has 4 divisors (see below), whose sum is σ = 5135956. Its totient is φ = 5111424.

The previous prime is 5123683. The next prime is 5123693. The reversal of 5123689 is 9863215.

5123689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9863215 = 5 ⋅1972643.

It can be written as a sum of positive squares in 2 ways, for example, as 2822400 + 2301289 = 1680^2 + 1517^2 .

It is a cyclic number.

It is not a de Polignac number, because 5123689 - 2⁹ = 5123177 is a prime.

It is a Duffinian number.

5123689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5123683) 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, 5484 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (1283989).

Almost surely, 2^5123689 is an apocalyptic number.

It is an amenable number.

5123689 is a deficient number, since it is larger than the sum of its proper divisors (12267).

5123689 is a wasteful number, since it uses less digits than its factorization.

5123689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12266.

The product of its digits is 12960, while the sum is 34.

The square root of 5123689 is about 2263.5567145534. The cubic root of 5123689 is about 172.3961595856.

The spelling of 5123689 in words is "five million, one hundred twenty-three thousand, six hundred eighty-nine".