489379788479 has 4 divisors (see below), whose sum is σ = 489381316200. Its totient is φ = 489378260760.

The previous prime is 489379788439. The next prime is 489379788503. The reversal of 489379788479 is 974887973984.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 489379788479 - 2⁸ = 489379788223 is a prime.

It is a super-2 number, since 2×489379788479² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 489379788397 and 489379788406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489379788439) 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, 78212 + ... + 992409.

It is an arithmetic number, because the mean of its divisors is an integer number (122345329050).

Almost surely, 2^489379788479 is an apocalyptic number.

489379788479 is a deficient number, since it is larger than the sum of its proper divisors (1527721).

489379788479 is a wasteful number, since it uses less digits than its factorization.

489379788479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527720.

The product of its digits is 6145155072, while the sum is 83.

The spelling of 489379788479 in words is "four hundred eighty-nine billion, three hundred seventy-nine million, seven hundred eighty-eight thousand, four hundred seventy-nine".