423999999 has 12 divisors (see below), whose sum is σ = 612828216. Its totient is φ = 282489552.

The previous prime is 423999973. The next prime is 424000013. The reversal of 423999999 is 999999324.

It is not a de Polignac number, because 423999999 - 2⁵ = 423999967 is a prime.

423999999 is a modest number, since divided by 99999 gives 4239 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423999929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1324 + ... + 29150.

It is an arithmetic number, because the mean of its divisors is an integer number (51069018).

Almost surely, 2^423999999 is an apocalyptic number.

423999999 is a deficient number, since it is larger than the sum of its proper divisors (188828217).

423999999 is a wasteful number, since it uses less digits than its factorization.

423999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29526 (or 29523 counting only the distinct ones).

The product of its digits is 12754584, while the sum is 63.

The square root of 423999999 is about 20591.2602576919. The cubic root of 423999999 is about 751.2571502536.

The spelling of 423999999 in words is "four hundred twenty-three million, nine hundred ninety-nine thousand, nine hundred ninety-nine".