423697993 has 8 divisors (see below), whose sum is σ = 428691200. Its totient is φ = 418732848.

The previous prime is 423697961. The next prime is 423698027. The reversal of 423697993 is 399796324.

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 423697993 - 2⁵ = 423697961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423697993.

It is not an unprimeable number, because it can be changed into a prime (423697943) 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, 24163 + ... + 37831.

It is an arithmetic number, because the mean of its divisors is an integer number (53586400).

Almost surely, 2^423697993 is an apocalyptic number.

It is an amenable number.

423697993 is a deficient number, since it is larger than the sum of its proper divisors (4993207).

423697993 is a wasteful number, since it uses less digits than its factorization.

423697993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14031.

The product of its digits is 2204496, while the sum is 52.

The square root of 423697993 is about 20583.9255974170. The cubic root of 423697993 is about 751.0787398314.

The spelling of 423697993 in words is "four hundred twenty-three million, six hundred ninety-seven thousand, nine hundred ninety-three".