486921721 has 16 divisors (see below), whose sum is σ = 602159040. Its totient is φ = 387097920.

The previous prime is 486921713. The next prime is 486921737. The reversal of 486921721 is 127129684.

It is not a de Polignac number, because 486921721 - 2³ = 486921713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (486921751) 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 15 ways as a sum of consecutive naturals, for example, 86890 + ... + 92323.

It is an arithmetic number, because the mean of its divisors is an integer number (37634940).

Almost surely, 2^486921721 is an apocalyptic number.

It is an amenable number.

486921721 is a deficient number, since it is larger than the sum of its proper divisors (115237319).

486921721 is a wasteful number, since it uses less digits than its factorization.

486921721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179256.

The product of its digits is 48384, while the sum is 40.

The square root of 486921721 is about 22066.3028393975. The cubic root of 486921721 is about 786.7191398454.

The spelling of 486921721 in words is "four hundred eighty-six million, nine hundred twenty-one thousand, seven hundred twenty-one".