489170871 has 18 divisors (see below), whose sum is σ = 821940912. Its totient is φ = 279525960.

The previous prime is 489170863. The next prime is 489170879. The reversal of 489170871 is 178071984.

It is an interprime number because it is at equal distance from previous prime (489170863) and next prime (489170879).

It is not a de Polignac number, because 489170871 - 2³ = 489170863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489170879) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 554175 + ... + 555056.

It is an arithmetic number, because the mean of its divisors is an integer number (45663384).

Almost surely, 2^489170871 is an apocalyptic number.

489170871 is a deficient number, since it is larger than the sum of its proper divisors (332770041).

489170871 is a wasteful number, since it uses less digits than its factorization.

489170871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109251 (or 1109241 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 489170871 is about 22117.2075769072. The cubic root of 489170871 is about 787.9285963241.

The spelling of 489170871 in words is "four hundred eighty-nine million, one hundred seventy thousand, eight hundred seventy-one".