489819947 has 16 divisors (see below), whose sum is σ = 526348800. Its totient is φ = 454947360.

The previous prime is 489819901. The next prime is 489819961. The reversal of 489819947 is 749918984.

It is not a de Polignac number, because 489819947 - 2¹⁴ = 489803563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489819977) 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, 77372 + ... + 83462.

It is an arithmetic number, because the mean of its divisors is an integer number (32896800).

Almost surely, 2^489819947 is an apocalyptic number.

489819947 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

489819947 is a deficient number, since it is larger than the sum of its proper divisors (36528853).

489819947 is a wasteful number, since it uses less digits than its factorization.

489819947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6226.

The product of its digits is 5225472, while the sum is 59.

The square root of 489819947 is about 22131.8762647906. The cubic root of 489819947 is about 788.2769405235.

The spelling of 489819947 in words is "four hundred eighty-nine million, eight hundred nineteen thousand, nine hundred forty-seven".