489444857597 has 16 divisors (see below), whose sum is σ = 519214924800. Its totient is φ = 460076825520.

The previous prime is 489444857593. The next prime is 489444857663. The reversal of 489444857597 is 795758444984.

It is a cyclic number.

It is not a de Polignac number, because 489444857597 - 2² = 489444857593 is a prime.

It is a super-2 number, since 2×489444857597² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489444857593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26391554 + ... + 26410092.

It is an arithmetic number, because the mean of its divisors is an integer number (32450932800).

Almost surely, 2^489444857597 is an apocalyptic number.

It is an amenable number.

489444857597 is a deficient number, since it is larger than the sum of its proper divisors (29770067203).

489444857597 is a wasteful number, since it uses less digits than its factorization.

489444857597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29296.

The product of its digits is 1625702400, while the sum is 74.

The spelling of 489444857597 in words is "four hundred eighty-nine billion, four hundred forty-four million, eight hundred fifty-seven thousand, five hundred ninety-seven".