487136489 has 10 divisors (see below), whose sum is σ = 568294890. Its totient is φ = 417543504.

The previous prime is 487136483. The next prime is 487136537. The reversal of 487136489 is 984631784.

It can be written as a sum of positive squares in only one way, i.e., 245862400 + 241274089 = 15680^2 + 15533^2 .

It is not a de Polignac number, because 487136489 - 2¹⁶ = 487070953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (487136483) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 99044 + ... + 103845.

It is an arithmetic number, because the mean of its divisors is an integer number (56829489).

Almost surely, 2^487136489 is an apocalyptic number.

487136489 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

487136489 is a deficient number, since it is larger than the sum of its proper divisors (81158401).

487136489 is an frugal number, since it uses more digits than its factorization.

487136489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202917 (or 202896 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 487136489 is about 22071.1687275504. The cubic root of 487136489 is about 786.8347896877.

The spelling of 487136489 in words is "four hundred eighty-seven million, one hundred thirty-six thousand, four hundred eighty-nine".