485784891 has 16 divisors (see below), whose sum is σ = 720104320. Its totient is φ = 323666280.

The previous prime is 485784883. The next prime is 485784899. The reversal of 485784891 is 198487584.

485784891 is a `hidden beast` number, since 485 + 7 + 84 + 89 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (485784883) and next prime (485784899).

It is not a de Polignac number, because 485784891 - 2³ = 485784883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (485784899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53316 + ... + 61758.

It is an arithmetic number, because the mean of its divisors is an integer number (45006520).

Almost surely, 2^485784891 is an apocalyptic number.

485784891 is a deficient number, since it is larger than the sum of its proper divisors (234319429).

485784891 is a wasteful number, since it uses less digits than its factorization.

485784891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10583 (or 10577 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 485784891 is about 22040.5283738843. The cubic root of 485784891 is about 786.1064042186.

The spelling of 485784891 in words is "four hundred eighty-five million, seven hundred eighty-four thousand, eight hundred ninety-one".