489085861 has 8 divisors (see below), whose sum is σ = 542295648. Its totient is φ = 437334000.

The previous prime is 489085819. The next prime is 489085871. The reversal of 489085861 is 168580984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 489085861 - 2¹¹ = 489083813 is a prime.

It is a super-2 number, since 2×489085861² = 478409958860222642, which 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 (489085871) 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 7 ways as a sum of consecutive naturals, for example, 363775 + ... + 365116.

It is an arithmetic number, because the mean of its divisors is an integer number (67786956).

Almost surely, 2^489085861 is an apocalyptic number.

It is an amenable number.

489085861 is a deficient number, since it is larger than the sum of its proper divisors (53209787).

489085861 is a wasteful number, since it uses less digits than its factorization.

489085861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728963.

The product of its (nonzero) digits is 552960, while the sum is 49.

The square root of 489085861 is about 22115.2856866015. The cubic root of 489085861 is about 787.8829505900.

The spelling of 489085861 in words is "four hundred eighty-nine million, eighty-five thousand, eight hundred sixty-one".