489844769 has 4 divisors (see below), whose sum is σ = 489922560. Its totient is φ = 489766980.

The previous prime is 489844759. The next prime is 489844781. The reversal of 489844769 is 967448984.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489844769 is a prime.

It is a super-2 number, since 2×489844769² = 479895795433326722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489844759) 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, 28529 + ... + 42350.

It is an arithmetic number, because the mean of its divisors is an integer number (122480640).

Almost surely, 2^489844769 is an apocalyptic number.

It is an amenable number.

489844769 is a deficient number, since it is larger than the sum of its proper divisors (77791).

489844769 is an equidigital number, since it uses as much as digits as its factorization.

489844769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77790.

The product of its digits is 13934592, while the sum is 59.

The square root of 489844769 is about 22132.4370325547. The cubic root of 489844769 is about 788.2902558106.

The spelling of 489844769 in words is "four hundred eighty-nine million, eight hundred forty-four thousand, seven hundred sixty-nine".