1423439 has 2 divisors, whose sum is σ = 1423440. Its totient is φ = 1423438.

The previous prime is 1423417. The next prime is 1423441. The reversal of 1423439 is 9343241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1423439 - 2⁸ = 1423183 is a prime.

Together with 1423441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711719 + 711720.

It is an arithmetic number, because the mean of its divisors is an integer number (711720).

2^1423439 is an apocalyptic number.

1423439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423439 is an equidigital number, since it uses as much as digits as its factorization.

1423439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 1423439 is about 1193.0796285244. The cubic root of 1423439 is about 112.4897505066.

The spelling of 1423439 in words is "one million, four hundred twenty-three thousand, four hundred thirty-nine".