84477871 has 4 divisors (see below), whose sum is σ = 84847000. Its totient is φ = 84108744.

The previous prime is 84477853. The next prime is 84477889. The reversal of 84477871 is 17877448.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (84477853) and next prime (84477889).

It is a cyclic number.

It is not a de Polignac number, because 84477871 - 2⁹ = 84477359 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 (84477851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184221 + ... + 184678.

It is an arithmetic number, because the mean of its divisors is an integer number (21211750).

Almost surely, 2^84477871 is an apocalyptic number.

84477871 is a deficient number, since it is larger than the sum of its proper divisors (369129).

84477871 is a wasteful number, since it uses less digits than its factorization.

84477871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369128.

The product of its digits is 351232, while the sum is 46.

The square root of 84477871 is about 9191.1844176907. The cubic root of 84477871 is about 438.7808381936.

The spelling of 84477871 in words is "eighty-four million, four hundred seventy-seven thousand, eight hundred seventy-one".