489887651 has 4 divisors (see below), whose sum is σ = 534422904. Its totient is φ = 445352400.

The previous prime is 489887617. The next prime is 489887669. The reversal of 489887651 is 156788984.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 489887651 - 2¹⁰ = 489886627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489887681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22267610 + ... + 22267631.

It is an arithmetic number, because the mean of its divisors is an integer number (133605726).

Almost surely, 2^489887651 is an apocalyptic number.

489887651 is a deficient number, since it is larger than the sum of its proper divisors (44535253).

489887651 is a wasteful number, since it uses less digits than its factorization.

489887651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44535252.

The product of its digits is 3870720, while the sum is 56.

The square root of 489887651 is about 22133.4057704638. The cubic root of 489887651 is about 788.3132579796.

The spelling of 489887651 in words is "four hundred eighty-nine million, eight hundred eighty-seven thousand, six hundred fifty-one".