489146691 has 16 divisors (see below), whose sum is σ = 718398720. Its totient is φ = 293572320.

The previous prime is 489146663. The next prime is 489146747. The reversal of 489146691 is 196641984.

It is not a de Polignac number, because 489146691 - 2¹³ = 489138499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489146691.

It is not an unprimeable number, because it can be changed into a prime (489146611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68556 + ... + 75353.

It is an arithmetic number, because the mean of its divisors is an integer number (44899920).

Almost surely, 2^489146691 is an apocalyptic number.

489146691 is a deficient number, since it is larger than the sum of its proper divisors (229252029).

489146691 is a wasteful number, since it uses less digits than its factorization.

489146691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144026.

The product of its digits is 373248, while the sum is 48.

The square root of 489146691 is about 22116.6609369498. The cubic root of 489146691 is about 787.9156135209.

The spelling of 489146691 in words is "four hundred eighty-nine million, one hundred forty-six thousand, six hundred ninety-one".