498789987893 has 4 divisors (see below), whose sum is σ = 498905266080. Its totient is φ = 498674709708.

The previous prime is 498789987889. The next prime is 498789987907. The reversal of 498789987893 is 398789987894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 498789987893 - 2² = 498789987889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 498789987799 and 498789987808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498789987863) 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, 57632603 + ... + 57641256.

It is an arithmetic number, because the mean of its divisors is an integer number (124726316520).

Almost surely, 2^498789987893 is an apocalyptic number.

It is an amenable number.

498789987893 is a deficient number, since it is larger than the sum of its proper divisors (115278187).

498789987893 is a wasteful number, since it uses less digits than its factorization.

498789987893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115278186.

The product of its digits is 15801827328, while the sum is 89.

Subtracting from 498789987893 its reverse (398789987894), we obtain a palindrome (99999999999).

The spelling of 498789987893 in words is "four hundred ninety-eight billion, seven hundred eighty-nine million, nine hundred eighty-seven thousand, eight hundred ninety-three".