489015987 has 4 divisors (see below), whose sum is σ = 652021320. Its totient is φ = 326010656.

The previous prime is 489015953. The next prime is 489016019. The reversal of 489015987 is 789510984.

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

It is a cyclic number.

It is not a de Polignac number, because 489015987 - 2⁷ = 489015859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489015287) 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, 81502662 + ... + 81502667.

It is an arithmetic number, because the mean of its divisors is an integer number (163005330).

Almost surely, 2^489015987 is an apocalyptic number.

489015987 is a deficient number, since it is larger than the sum of its proper divisors (163005333).

489015987 is a wasteful number, since it uses less digits than its factorization.

489015987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163005332.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 489015987 is about 22113.7058631067. The cubic root of 489015987 is about 787.8454281019.

The spelling of 489015987 in words is "four hundred eighty-nine million, fifteen thousand, nine hundred eighty-seven".