889439342823 has 12 divisors (see below), whose sum is σ = 1285550212648. Its totient is φ = 592588256400.

The previous prime is 889439342821. The next prime is 889439342837. The reversal of 889439342823 is 328243934988.

889439342823 is a `hidden beast` number, since 8 + 89 + 43 + 93 + 428 + 2 + 3 = 666.

It is not a de Polignac number, because 889439342823 - 2¹ = 889439342821 is a prime.

It is a super-2 number, since 2×889439342823² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889439342821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30926953 + ... + 30955698.

Almost surely, 2^889439342823 is an apocalyptic number.

889439342823 is a deficient number, since it is larger than the sum of its proper divisors (396110869825).

889439342823 is a wasteful number, since it uses less digits than its factorization.

889439342823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61884254 (or 61884251 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 63.

The spelling of 889439342823 in words is "eight hundred eighty-nine billion, four hundred thirty-nine million, three hundred forty-two thousand, eight hundred twenty-three".