84855417 has 16 divisors (see below), whose sum is σ = 114736128. Its totient is φ = 55777680.

The previous prime is 84855413. The next prime is 84855427. The reversal of 84855417 is 71455848.

It is not a de Polignac number, because 84855417 - 2² = 84855413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84855413) 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, 95658 + ... + 96540.

It is an arithmetic number, because the mean of its divisors is an integer number (7171008).

Almost surely, 2^84855417 is an apocalyptic number.

It is an amenable number.

84855417 is a deficient number, since it is larger than the sum of its proper divisors (29880711).

84855417 is a wasteful number, since it uses less digits than its factorization.

84855417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300.

The product of its digits is 179200, while the sum is 42.

The square root of 84855417 is about 9211.7000059707. The cubic root of 84855417 is about 439.4335289388.

It can be divided in two parts, 848 and 55417, that added together give a palindrome (56265).

The spelling of 84855417 in words is "eighty-four million, eight hundred fifty-five thousand, four hundred seventeen".