489998847 has 16 divisors (see below), whose sum is σ = 740620160. Its totient is φ = 285666912.

The previous prime is 489998797. The next prime is 489998863. The reversal of 489998847 is 748899984.

It is not a de Polignac number, because 489998847 - 2⁶ = 489998783 is a prime.

It is a super-2 number, since 2×489998847² = 480197740122658818, which 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 (489298847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329893 + ... + 331374.

It is an arithmetic number, because the mean of its divisors is an integer number (46288760).

Almost surely, 2^489998847 is an apocalyptic number.

489998847 is a deficient number, since it is larger than the sum of its proper divisors (250621313).

489998847 is a wasteful number, since it uses less digits than its factorization.

489998847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661302.

The product of its digits is 41803776, while the sum is 66.

The square root of 489998847 is about 22135.9175775480. The cubic root of 489998847 is about 788.3728979463.

The spelling of 489998847 in words is "four hundred eighty-nine million, nine hundred ninety-eight thousand, eight hundred forty-seven".