496079821 has 4 divisors (see below), whose sum is σ = 496183644. Its totient is φ = 495976000.

The previous prime is 496079807. The next prime is 496079879. The reversal of 496079821 is 128970694.

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 420824196 + 75255625 = 20514^2 + 8675^2 .

It is a cyclic number.

It is not a de Polignac number, because 496079821 - 2¹¹ = 496077773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (496079891) 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, 44380 + ... + 54421.

It is an arithmetic number, because the mean of its divisors is an integer number (124045911).

Almost surely, 2^496079821 is an apocalyptic number.

It is an amenable number.

496079821 is a deficient number, since it is larger than the sum of its proper divisors (103823).

496079821 is an equidigital number, since it uses as much as digits as its factorization.

496079821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103822.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 496079821 is about 22272.8494135798. The cubic root of 496079821 is about 791.6207824093.

The spelling of 496079821 in words is "four hundred ninety-six million, seventy-nine thousand, eight hundred twenty-one".