423393138 has 96 divisors (see below), whose sum is σ = 1072760832. Its totient is φ = 118195200.

The previous prime is 423393077. The next prime is 423393149. The reversal of 423393138 is 831393324.

423393138 is a `hidden beast` number, since 4 + 2 + 339 + 313 + 8 = 666.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1756698 + ... + 1756938.

It is an arithmetic number, because the mean of its divisors is an integer number (11174592).

Almost surely, 2^423393138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423393138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536380416).

423393138 is an abundant number, since it is smaller than the sum of its proper divisors (649367694).

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

423393138 is a wasteful number, since it uses less digits than its factorization.

423393138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 517 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 423393138 is about 20576.5190933744. The cubic root of 423393138 is about 750.8985603558.

The spelling of 423393138 in words is "four hundred twenty-three million, three hundred ninety-three thousand, one hundred thirty-eight".