489870637 has 4 divisors (see below), whose sum is σ = 490082236. Its totient is φ = 489659040.

The previous prime is 489870593. The next prime is 489870739. The reversal of 489870637 is 736078984.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218477961 + 271392676 = 14781^2 + 16474^2 .

It is a cyclic number.

It is not a de Polignac number, because 489870637 - 2²⁷ = 355652909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489871637) 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, 102288 + ... + 106969.

It is an arithmetic number, because the mean of its divisors is an integer number (122520559).

Almost surely, 2^489870637 is an apocalyptic number.

It is an amenable number.

489870637 is a deficient number, since it is larger than the sum of its proper divisors (211599).

489870637 is a wasteful number, since it uses less digits than its factorization.

489870637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211598.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 489870637 is about 22133.0214159748. The cubic root of 489870637 is about 788.3041317258.

The spelling of 489870637 in words is "four hundred eighty-nine million, eight hundred seventy thousand, six hundred thirty-seven".