486909488521 has 9 divisors (see below), whose sum is σ = 488343462733. Its totient is φ = 485479718860.

The previous prime is 486909488509. The next prime is 486909488537. The reversal of 486909488521 is 125884909684.

The square root of 486909488521 is 697789.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 486909488521 - 2¹⁹ = 486908964233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (486909488561) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 300746250 + ... + 300747868.

Almost surely, 2^486909488521 is an apocalyptic number.

486909488521 is the 697789-th square number.

486909488521 is the 348895-th centered octagonal number.

It is an amenable number.

486909488521 is a deficient number, since it is larger than the sum of its proper divisors (1433974212).

486909488521 is an frugal number, since it uses more digits than its factorization.

486909488521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100 (or 2050 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 64.

Multiplying 486909488521 by its sum of digits (64), we get a square (31162207265344 = 5582312²).

The spelling of 486909488521 in words is "four hundred eighty-six billion, nine hundred nine million, four hundred eighty-eight thousand, five hundred twenty-one".