84847971 has 24 divisors (see below), whose sum is σ = 123669936. Its totient is φ = 51717120.

The previous prime is 84847967. The next prime is 84848009. The reversal of 84847971 is 17974848.

It is not a de Polignac number, because 84847971 - 2² = 84847967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84847971.

It is not an unprimeable number, because it can be changed into a prime (84847921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56551 + ... + 58031.

It is an arithmetic number, because the mean of its divisors is an integer number (5152914).

Almost surely, 2^84847971 is an apocalyptic number.

84847971 is a deficient number, since it is larger than the sum of its proper divisors (38821965).

84847971 is a wasteful number, since it uses less digits than its factorization.

84847971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623 (or 1610 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 84847971 is about 9211.2958371773. The cubic root of 84847971 is about 439.4206752406.

The spelling of 84847971 in words is "eighty-four million, eight hundred forty-seven thousand, nine hundred seventy-one".