489884402669 has 4 divisors (see below), whose sum is σ = 489885807840. Its totient is φ = 489882997500.

The previous prime is 489884402653. The next prime is 489884402717. The reversal of 489884402669 is 966204488984.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 489884402669 - 2⁴ = 489884402653 is a prime.

It is a super-2 number, since 2×489884402669² (a number of 24 digits) contains 22 as substring.

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 = 489884402599 and 489884402608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489884402069) 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, 259544 + ... + 1023294.

It is an arithmetic number, because the mean of its divisors is an integer number (122471451960).

Almost surely, 2^489884402669 is an apocalyptic number.

It is an amenable number.

489884402669 is a deficient number, since it is larger than the sum of its proper divisors (1405171).

489884402669 is an equidigital number, since it uses as much as digits as its factorization.

489884402669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405170.

The product of its (nonzero) digits is 191102976, while the sum is 68.

The spelling of 489884402669 in words is "four hundred eighty-nine billion, eight hundred eighty-four million, four hundred two thousand, six hundred sixty-nine".