84055971 has 16 divisors (see below), whose sum is σ = 115388064. Its totient is φ = 54388224.

The previous prime is 84055967. The next prime is 84055991. The reversal of 84055971 is 17955048.

It is not a de Polignac number, because 84055971 - 2² = 84055967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84055991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65185 + ... + 66461.

It is an arithmetic number, because the mean of its divisors is an integer number (7211754).

Almost surely, 2^84055971 is an apocalyptic number.

84055971 is a deficient number, since it is larger than the sum of its proper divisors (31332093).

84055971 is a wasteful number, since it uses less digits than its factorization.

84055971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 84055971 is about 9168.2043498168. The cubic root of 84055971 is about 438.0491646402.

The spelling of 84055971 in words is "eighty-four million, fifty-five thousand, nine hundred seventy-one".