479493821 has 8 divisors (see below), whose sum is σ = 481587960. Its totient is φ = 477404928.

The previous prime is 479493793. The next prime is 479493827. The reversal of 479493821 is 128394974.

It can be written as a sum of positive squares in 4 ways, for example, as 62884900 + 416608921 = 7930^2 + 20411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 479493821 - 2⁶ = 479493757 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 (479493827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371345 + ... + 372633.

It is an arithmetic number, because the mean of its divisors is an integer number (60198495).

Almost surely, 2^479493821 is an apocalyptic number.

It is an amenable number.

479493821 is a deficient number, since it is larger than the sum of its proper divisors (2094139).

479493821 is a wasteful number, since it uses less digits than its factorization.

479493821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623.

The product of its digits is 435456, while the sum is 47.

The square root of 479493821 is about 21897.3473507637. The cubic root of 479493821 is about 782.6982059056.

The spelling of 479493821 in words is "four hundred seventy-nine million, four hundred ninety-three thousand, eight hundred twenty-one".