499773871989 has 16 divisors (see below), whose sum is σ = 846177984640. Its totient is φ = 285585069600.

The previous prime is 499773871937. The next prime is 499773871991. The reversal of 499773871989 is 989178377994.

499773871989 is a `hidden beast` number, since 4 + 99 + 77 + 387 + 1 + 9 + 89 = 666.

It is not a de Polignac number, because 499773871989 - 2¹² = 499773867893 is a prime.

It is a super-2 number, since 2×499773871989² (a number of 24 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 (499773871999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322152912 + ... + 1322153289.

It is an arithmetic number, because the mean of its divisors is an integer number (52886124040).

Almost surely, 2^499773871989 is an apocalyptic number.

It is an amenable number.

499773871989 is a deficient number, since it is larger than the sum of its proper divisors (346404112651).

499773871989 is a wasteful number, since it uses less digits than its factorization.

499773871989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644306217 (or 2644306211 counting only the distinct ones).

The product of its digits is 1728324864, while the sum is 81.

The spelling of 499773871989 in words is "four hundred ninety-nine billion, seven hundred seventy-three million, eight hundred seventy-one thousand, nine hundred eighty-nine".