428893885823 has 4 divisors (see below), whose sum is σ = 461885723208. Its totient is φ = 395902048440.

The previous prime is 428893885807. The next prime is 428893885829. The reversal of 428893885823 is 328588398824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428893885823 - 2⁴ = 428893885807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428893885829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16495918673 + ... + 16495918698.

It is an arithmetic number, because the mean of its divisors is an integer number (115471430802).

Almost surely, 2^428893885823 is an apocalyptic number.

428893885823 is a deficient number, since it is larger than the sum of its proper divisors (32991837385).

428893885823 is a wasteful number, since it uses less digits than its factorization.

428893885823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32991837384.

The product of its digits is 212336640, while the sum is 68.

The spelling of 428893885823 in words is "four hundred twenty-eight billion, eight hundred ninety-three million, eight hundred eighty-five thousand, eight hundred twenty-three".