489694464 has 288 divisors, whose sum is σ = 1716960000. Its totient is φ = 134701056.

The previous prime is 489694463. The next prime is 489694477. The reversal of 489694464 is 464496984.

It is a happy number.

489694464 is a `hidden beast` number, since 4 + 8 + 96 + 94 + 464 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 489694464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489694463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1402962 + ... + 1403310.

Almost surely, 2^489694464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489694464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (858480000).

489694464 is an abundant number, since it is smaller than the sum of its proper divisors (1227265536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489694464 is a wasteful number, since it uses less digits than its factorization.

489694464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 390 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The square root of 489694464 is about 22129.0411902549. The cubic root of 489694464 is about 788.2096206822.

The spelling of 489694464 in words is "four hundred eighty-nine million, six hundred ninety-four thousand, four hundred sixty-four".