489951651 has 16 divisors (see below), whose sum is σ = 785888000. Its totient is φ = 265236768.

The previous prime is 489951647. The next prime is 489951653. The reversal of 489951651 is 156159984.

It is not a de Polignac number, because 489951651 - 2² = 489951647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 489951651.

It is not an unprimeable number, because it can be changed into a prime (489951653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613576 + ... + 614373.

It is an arithmetic number, because the mean of its divisors is an integer number (49118000).

Almost surely, 2^489951651 is an apocalyptic number.

489951651 is a deficient number, since it is larger than the sum of its proper divisors (295936349).

489951651 is a wasteful number, since it uses less digits than its factorization.

489951651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227978.

The product of its digits is 388800, while the sum is 48.

The square root of 489951651 is about 22134.8515016478. The cubic root of 489951651 is about 788.3475854773.

The spelling of 489951651 in words is "four hundred eighty-nine million, nine hundred fifty-one thousand, six hundred fifty-one".