489404569 has 4 divisors (see below), whose sum is σ = 491354640. Its totient is φ = 487454500.

The previous prime is 489404567. The next prime is 489404579. The reversal of 489404569 is 965404984.

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 not a de Polignac number, because 489404569 - 2¹ = 489404567 is a prime.

It is a super-2 number, since 2×489404569² = 479033664316151522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489404567) 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, 974659 + ... + 975160.

It is an arithmetic number, because the mean of its divisors is an integer number (122838660).

Almost surely, 2^489404569 is an apocalyptic number.

It is an amenable number.

489404569 is a deficient number, since it is larger than the sum of its proper divisors (1950071).

489404569 is a wasteful number, since it uses less digits than its factorization.

489404569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950070.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 489404569 is about 22122.4901175252. The cubic root of 489404569 is about 788.0540521599.

The spelling of 489404569 in words is "four hundred eighty-nine million, four hundred four thousand, five hundred sixty-nine".