486857881 has 4 divisors (see below), whose sum is σ = 512482000. Its totient is φ = 461233764.

The previous prime is 486857879. The next prime is 486857933. The reversal of 486857881 is 188758684.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 486857881 - 2¹ = 486857879 is a prime.

It is a super-2 number, since 2×486857881² = 474061192583620322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (486857851) 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, 12812031 + ... + 12812068.

It is an arithmetic number, because the mean of its divisors is an integer number (128120500).

Almost surely, 2^486857881 is an apocalyptic number.

It is an amenable number.

486857881 is a deficient number, since it is larger than the sum of its proper divisors (25624119).

486857881 is a wasteful number, since it uses less digits than its factorization.

486857881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25624118.

The product of its digits is 3440640, while the sum is 55.

The square root of 486857881 is about 22064.8562424503. The cubic root of 486857881 is about 786.6847562591.

The spelling of 486857881 in words is "four hundred eighty-six million, eight hundred fifty-seven thousand, eight hundred eighty-one".