489566237 has 2 divisors, whose sum is σ = 489566238. Its totient is φ = 489566236.

The previous prime is 489566219. The next prime is 489566243. The reversal of 489566237 is 732665984.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476505241 + 13060996 = 21829^2 + 3614^2 .

It is a cyclic number.

It is not a de Polignac number, because 489566237 - 2⁶ = 489566173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489566267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244783118 + 244783119.

It is an arithmetic number, because the mean of its divisors is an integer number (244783119).

Almost surely, 2^489566237 is an apocalyptic number.

It is an amenable number.

489566237 is a deficient number, since it is larger than the sum of its proper divisors (1).

489566237 is an equidigital number, since it uses as much as digits as its factorization.

489566237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 489566237 is about 22126.1437444486. The cubic root of 489566237 is about 788.1408168426.

The spelling of 489566237 in words is "four hundred eighty-nine million, five hundred sixty-six thousand, two hundred thirty-seven".