489517967 has 2 divisors, whose sum is σ = 489517968. Its totient is φ = 489517966.

The previous prime is 489517961. The next prime is 489517997. The reversal of 489517967 is 769715984.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489517967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489517961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244758983 + 244758984.

It is an arithmetic number, because the mean of its divisors is an integer number (244758984).

Almost surely, 2^489517967 is an apocalyptic number.

489517967 is a deficient number, since it is larger than the sum of its proper divisors (1).

489517967 is an equidigital number, since it uses as much as digits as its factorization.

489517967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 56.

The square root of 489517967 is about 22125.0529264904. The cubic root of 489517967 is about 788.1149130903.

The spelling of 489517967 in words is "four hundred eighty-nine million, five hundred seventeen thousand, nine hundred sixty-seven".