489352240 has 40 divisors (see below), whose sum is σ = 1225265328. Its totient is φ = 180683520.

The previous prime is 489352231. The next prime is 489352247. The reversal of 489352240 is 42253984.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×489352240² = 478931229586035200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 489352240.

It is not an unprimeable number, because it can be changed into a prime (489352247) 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, 234226 + ... + 236305.

Almost surely, 2^489352240 is an apocalyptic number.

489352240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

489352240 is an abundant number, since it is smaller than the sum of its proper divisors (735913088).

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

489352240 is a wasteful number, since it uses less digits than its factorization.

489352240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470557 (or 470551 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 489352240 is about 22121.3073754695. The cubic root of 489352240 is about 788.0259639121.

The spelling of 489352240 in words is "four hundred eighty-nine million, three hundred fifty-two thousand, two hundred forty".