489378641 has 8 divisors (see below), whose sum is σ = 497868744. Its totient is φ = 480936960.

The previous prime is 489378623. The next prime is 489378689. The reversal of 489378641 is 146873984.

It can be written as a sum of positive squares in 4 ways, for example, as 27300625 + 462078016 = 5225^2 + 21496^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 489378641 - 2¹⁴ = 489362257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 489378641.

It is not an unprimeable number, because it can be changed into a prime (489378601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8585 + ... + 32441.

It is an arithmetic number, because the mean of its divisors is an integer number (62233593).

Almost surely, 2^489378641 is an apocalyptic number.

It is an amenable number.

489378641 is a deficient number, since it is larger than the sum of its proper divisors (8490103).

489378641 is a wasteful number, since it uses less digits than its factorization.

489378641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24211.

The product of its digits is 1161216, while the sum is 50.

The square root of 489378641 is about 22121.9040997831. The cubic root of 489378641 is about 788.0401352306.

The spelling of 489378641 in words is "four hundred eighty-nine million, three hundred seventy-eight thousand, six hundred forty-one".