498481721 has 4 divisors (see below), whose sum is σ = 500281572. Its totient is φ = 496681872.

The previous prime is 498481703. The next prime is 498481727. The reversal of 498481721 is 127184894.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64176121 + 434305600 = 8011^2 + 20840^2 .

It is a cyclic number.

It is not a de Polignac number, because 498481721 - 2⁶ = 498481657 is a prime.

It is a super-2 number, since 2×498481721² = 496968052342243682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498481727) 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 3 ways as a sum of consecutive naturals, for example, 899510 + ... + 900063.

It is an arithmetic number, because the mean of its divisors is an integer number (125070393).

Almost surely, 2^498481721 is an apocalyptic number.

It is an amenable number.

498481721 is a deficient number, since it is larger than the sum of its proper divisors (1799851).

498481721 is a wasteful number, since it uses less digits than its factorization.

498481721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799850.

The product of its digits is 129024, while the sum is 44.

The square root of 498481721 is about 22326.7042126687. The cubic root of 498481721 is about 792.8963388865.

The spelling of 498481721 in words is "four hundred ninety-eight million, four hundred eighty-one thousand, seven hundred twenty-one".