423409999 has 8 divisors (see below), whose sum is σ = 427266560. Its totient is φ = 419561856.

The previous prime is 423409969. The next prime is 423410011. The reversal of 423409999 is 999904324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423409999 - 2⁹ = 423409487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423409919) 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 in 7 ways as a sum of consecutive naturals, for example, 141907 + ... + 144859.

It is an arithmetic number, because the mean of its divisors is an integer number (53408320).

Almost surely, 2^423409999 is an apocalyptic number.

423409999 is a deficient number, since it is larger than the sum of its proper divisors (3856561).

423409999 is a wasteful number, since it uses less digits than its factorization.

423409999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 423409999 is about 20576.9288038813. The cubic root of 423409999 is about 750.9085280284.

The spelling of 423409999 in words is "four hundred twenty-three million, four hundred nine thousand, nine hundred ninety-nine".