423906816 has 40 divisors (see below), whose sum is σ = 1129318344. Its totient is φ = 141301760.

The previous prime is 423906809. The next prime is 423906829. The reversal of 423906816 is 618609324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136455 + ... + 139526.

Almost surely, 2^423906816 is an apocalyptic number.

It is an amenable number.

423906816 is an abundant number, since it is smaller than the sum of its proper divisors (705411528).

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

423906816 is an equidigital number, since it uses as much as digits as its factorization.

423906816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276002 (or 275986 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 423906816 is about 20588.9974500946. The cubic root of 423906816 is about 751.2021113195.

The spelling of 423906816 in words is "four hundred twenty-three million, nine hundred six thousand, eight hundred sixteen".