423448999 has 2 divisors, whose sum is σ = 423449000. Its totient is φ = 423448998.

The previous prime is 423448997. The next prime is 423449003. The reversal of 423448999 is 999844324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423448999 - 2¹ = 423448997 is a prime.

Together with 423448997, 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 (423448997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211724499 + 211724500.

It is an arithmetic number, because the mean of its divisors is an integer number (211724500).

Almost surely, 2^423448999 is an apocalyptic number.

423448999 is a deficient number, since it is larger than the sum of its proper divisors (1).

423448999 is an equidigital number, since it uses as much as digits as its factorization.

423448999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 52.

The square root of 423448999 is about 20577.8764453478. The cubic root of 423448999 is about 750.9315825410.

The spelling of 423448999 in words is "four hundred twenty-three million, four hundred forty-eight thousand, nine hundred ninety-nine".