423990834 has 8 divisors (see below), whose sum is σ = 847981680. Its totient is φ = 141330276.

The previous prime is 423990823. The next prime is 423990851. The reversal of 423990834 is 438099324.

It is a happy number.

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

423990834 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35332564 + ... + 35332575.

It is an arithmetic number, because the mean of its divisors is an integer number (105997710).

Almost surely, 2^423990834 is an apocalyptic number.

423990834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423990834 is a wasteful number, since it uses less digits than its factorization.

423990834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70665144.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 423990834 is about 20591.0377106158. The cubic root of 423990834 is about 751.2517372651.

The spelling of 423990834 in words is "four hundred twenty-three million, nine hundred ninety thousand, eight hundred thirty-four".