489517139 has 2 divisors, whose sum is σ = 489517140. Its totient is φ = 489517138.

The previous prime is 489517111. The next prime is 489517183. The reversal of 489517139 is 931715984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489517139 - 2⁸ = 489516883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 489517093 and 489517102.

It is not a weakly prime, because it can be changed into another prime (489517439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244758569 + 244758570.

It is an arithmetic number, because the mean of its divisors is an integer number (244758570).

Almost surely, 2^489517139 is an apocalyptic number.

489517139 is a deficient number, since it is larger than the sum of its proper divisors (1).

489517139 is an equidigital number, since it uses as much as digits as its factorization.

489517139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 47.

The square root of 489517139 is about 22125.0342146628. The cubic root of 489517139 is about 788.1144687351.

The spelling of 489517139 in words is "four hundred eighty-nine million, five hundred seventeen thousand, one hundred thirty-nine".