479881661 has 8 divisors (see below), whose sum is σ = 580697280. Its totient is φ = 387131328.

The previous prime is 479881657. The next prime is 479881669. The reversal of 479881661 is 166188974.

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 479881661 - 2² = 479881657 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 (479881669) 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 7 ways as a sum of consecutive naturals, for example, 2016191 + ... + 2016428.

It is an arithmetic number, because the mean of its divisors is an integer number (72587160).

Almost surely, 2^479881661 is an apocalyptic number.

It is an amenable number.

479881661 is a deficient number, since it is larger than the sum of its proper divisors (100815619).

479881661 is a wasteful number, since it uses less digits than its factorization.

479881661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032643.

The product of its digits is 580608, while the sum is 50.

The square root of 479881661 is about 21906.2014279062. The cubic root of 479881661 is about 782.9091782894.

The spelling of 479881661 in words is "four hundred seventy-nine million, eight hundred eighty-one thousand, six hundred sixty-one".