489998679 has 8 divisors (see below), whose sum is σ = 674406912. Its totient is φ = 316128120.

The previous prime is 489998669. The next prime is 489998681. The reversal of 489998679 is 976899984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 489998679 - 2⁸ = 489998423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489998609) 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, 2634309 + ... + 2634494.

It is an arithmetic number, because the mean of its divisors is an integer number (84300864).

Almost surely, 2^489998679 is an apocalyptic number.

489998679 is a deficient number, since it is larger than the sum of its proper divisors (184408233).

489998679 is a wasteful number, since it uses less digits than its factorization.

489998679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268837.

The product of its digits is 70543872, while the sum is 69.

The square root of 489998679 is about 22135.9137828101. The cubic root of 489998679 is about 788.3728078463.

The spelling of 489998679 in words is "four hundred eighty-nine million, nine hundred ninety-eight thousand, six hundred seventy-nine".