5439823 has 2 divisors, whose sum is σ = 5439824. Its totient is φ = 5439822.

The previous prime is 5439821. The next prime is 5439829. The reversal of 5439823 is 3289345.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5439823 - 2¹ = 5439821 is a prime.

Together with 5439821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5439821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2719911 + 2719912.

It is an arithmetic number, because the mean of its divisors is an integer number (2719912).

Almost surely, 2^5439823 is an apocalyptic number.

5439823 is a deficient number, since it is larger than the sum of its proper divisors (1).

5439823 is an equidigital number, since it uses as much as digits as its factorization.

5439823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 5439823 is about 2332.3428135675. The cubic root of 5439823 is about 175.8712794175.

The spelling of 5439823 in words is "five million, four hundred thirty-nine thousand, eight hundred twenty-three".