84455985 has 16 divisors (see below), whose sum is σ = 135247680. Its totient is φ = 45003840.

The previous prime is 84455971. The next prime is 84455989. The reversal of 84455985 is 58955448.

It is not a de Polignac number, because 84455985 - 2⁵ = 84455953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84455989) 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, 25611 + ... + 28719.

It is an arithmetic number, because the mean of its divisors is an integer number (8452980).

Almost surely, 2^84455985 is an apocalyptic number.

It is an amenable number.

84455985 is a deficient number, since it is larger than the sum of its proper divisors (50791695).

84455985 is a wasteful number, since it uses less digits than its factorization.

84455985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928.

The product of its digits is 1152000, while the sum is 48.

The square root of 84455985 is about 9189.9937431970. The cubic root of 84455985 is about 438.7429427197.

The spelling of 84455985 in words is "eighty-four million, four hundred fifty-five thousand, nine hundred eighty-five".