423394896821 has 8 divisors (see below), whose sum is σ = 456047581920. Its totient is φ = 390754189872.

The previous prime is 423394896809. The next prime is 423394896829. The reversal of 423394896821 is 128698493324.

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 423394896821 - 2²⁶ = 423327787957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423394896829) 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, 2921051 + ... + 3062568.

It is an arithmetic number, because the mean of its divisors is an integer number (57005947740).

Almost surely, 2^423394896821 is an apocalyptic number.

It is an amenable number.

423394896821 is a deficient number, since it is larger than the sum of its proper divisors (32652685099).

423394896821 is a wasteful number, since it uses less digits than its factorization.

423394896821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989075.

The product of its digits is 17915904, while the sum is 59.

The spelling of 423394896821 in words is "four hundred twenty-three billion, three hundred ninety-four million, eight hundred ninety-six thousand, eight hundred twenty-one".