485723881 has 4 divisors (see below), whose sum is σ = 514295892. Its totient is φ = 457151872.

The previous prime is 485723879. The next prime is 485723921. The reversal of 485723881 is 188327584.

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 258920281 + 226803600 = 16091^2 + 15060^2 .

It is a cyclic number.

It is not a de Polignac number, because 485723881 - 2¹ = 485723879 is a prime.

It is a super-2 number, since 2×485723881² = 471855377147404322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (485723801) 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, 14285980 + ... + 14286013.

It is an arithmetic number, because the mean of its divisors is an integer number (128573973).

Almost surely, 2^485723881 is an apocalyptic number.

It is an amenable number.

485723881 is a deficient number, since it is larger than the sum of its proper divisors (28572011).

485723881 is a wasteful number, since it uses less digits than its factorization.

485723881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28572010.

The product of its digits is 430080, while the sum is 46.

The square root of 485723881 is about 22039.1442891960. The cubic root of 485723881 is about 786.0734936577.

The spelling of 485723881 in words is "four hundred eighty-five million, seven hundred twenty-three thousand, eight hundred eighty-one".