1393489423 has 2 divisors, whose sum is σ = 1393489424. Its totient is φ = 1393489422.

The previous prime is 1393489421. The next prime is 1393489451. The reversal of 1393489423 is 3249843931.

It is a weak prime.

It is an emirp because it is prime and its reverse (3249843931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1393489423 - 2¹ = 1393489421 is a prime.

Together with 1393489421, 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 (1393489421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696744711 + 696744712.

It is an arithmetic number, because the mean of its divisors is an integer number (696744712).

Almost surely, 2^1393489423 is an apocalyptic number.

1393489423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393489423 is an equidigital number, since it uses as much as digits as its factorization.

1393489423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 46.

The square root of 1393489423 is about 37329.4712392233. The cubic root of 1393489423 is about 1116.9521254414.

The spelling of 1393489423 in words is "one billion, three hundred ninety-three million, four hundred eighty-nine thousand, four hundred twenty-three".