489602861 has 4 divisors (see below), whose sum is σ = 534112224. Its totient is φ = 445093500.

The previous prime is 489602843. The next prime is 489602891. The reversal of 489602861 is 168206984.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 489602861 - 2¹⁰ = 489601837 is a prime.

It is a super-2 number, since 2×489602861² = 479421922998770642, 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 (489602801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22254665 + ... + 22254686.

It is an arithmetic number, because the mean of its divisors is an integer number (133528056).

Almost surely, 2^489602861 is an apocalyptic number.

It is an amenable number.

489602861 is a deficient number, since it is larger than the sum of its proper divisors (44509363).

489602861 is a wasteful number, since it uses less digits than its factorization.

489602861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44509362.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 489602861 is about 22126.9713472043. The cubic root of 489602861 is about 788.1604697158.

The spelling of 489602861 in words is "four hundred eighty-nine million, six hundred two thousand, eight hundred sixty-one".