489640225698 has 90 divisors (see below), whose sum is σ = 1188326525859. Its totient is φ = 150622905888.

The previous prime is 489640225693. The next prime is 489640225703. The reversal of 489640225698 is 896522046984.

489640225698 is a `hidden beast` number, since 4 + 8 + 9 + 6 + 40 + 22 + 569 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (489640225693) and next prime (489640225703).

It can be written as a sum of positive squares in 5 ways, for example, as 396185901489 + 93454324209 = 629433^2 + 305703^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=494793.

It is not an unprimeable number, because it can be changed into a prime (489640225693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 115779448 + ... + 115783676.

Almost surely, 2^489640225698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489640225698

489640225698 is an abundant number, since it is smaller than the sum of its proper divisors (698686300161).

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

489640225698 is an frugal number, since it uses more digits than its factorization.

489640225698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8498 (or 4247 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 489640225698 in words is "four hundred eighty-nine billion, six hundred forty million, two hundred twenty-five thousand, six hundred ninety-eight".