423345993 has 8 divisors (see below), whose sum is σ = 645098688. Its totient is φ = 241911984.

The previous prime is 423345983. The next prime is 423345997. The reversal of 423345993 is 399543324.

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

It is not a de Polignac number, because 423345993 - 2⁶ = 423345929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423345997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10079646 + ... + 10079687.

It is an arithmetic number, because the mean of its divisors is an integer number (80637336).

Almost surely, 2^423345993 is an apocalyptic number.

It is an amenable number.

423345993 is a deficient number, since it is larger than the sum of its proper divisors (221752695).

423345993 is a wasteful number, since it uses less digits than its factorization.

423345993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20159343.

The product of its digits is 349920, while the sum is 42.

The square root of 423345993 is about 20575.3734595511. The cubic root of 423345993 is about 750.8706883668.

The spelling of 423345993 in words is "four hundred twenty-three million, three hundred forty-five thousand, nine hundred ninety-three".