489749436 has 96 divisors (see below), whose sum is σ = 1397007360. Its totient is φ = 148365360.

The previous prime is 489749417. The next prime is 489749437. The reversal of 489749436 is 634947984.

It is a happy number.

489749436 is a `hidden beast` number, since 489 + 74 + 94 + 3 + 6 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489749437) 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, 142045 + ... + 145451.

It is an arithmetic number, because the mean of its divisors is an integer number (14552160).

Almost surely, 2^489749436 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 489749436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698503680).

489749436 is an abundant number, since it is smaller than the sum of its proper divisors (907257924).

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

489749436 is a wasteful number, since it uses less digits than its factorization.

489749436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453 (or 3423 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 489749436 is about 22130.2832336145. The cubic root of 489749436 is about 788.2391137922.

The spelling of 489749436 in words is "four hundred eighty-nine million, seven hundred forty-nine thousand, four hundred thirty-six".