1423243999 has 2 divisors, whose sum is σ = 1423244000. Its totient is φ = 1423243998.

The previous prime is 1423243993. The next prime is 1423244051. The reversal of 1423243999 is 9993423241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1423243999 - 2²³ = 1414855391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423243993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711621999 + 711622000.

It is an arithmetic number, because the mean of its divisors is an integer number (711622000).

Almost surely, 2^1423243999 is an apocalyptic number.

1423243999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423243999 is an equidigital number, since it uses as much as digits as its factorization.

1423243999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 46.

The square root of 1423243999 is about 37725.9062051530. The cubic root of 1423243999 is about 1124.8461350723.

The spelling of 1423243999 in words is "one billion, four hundred twenty-three million, two hundred forty-three thousand, nine hundred ninety-nine".