84018985 has 8 divisors (see below), whose sum is σ = 102204360. Its totient is φ = 66294144.

The previous prime is 84018983. The next prime is 84018989. The reversal of 84018985 is 58981048.

It can be written as a sum of positive squares in 4 ways, for example, as 20529961 + 63489024 = 4531^2 + 7968^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84018985 - 2¹ = 84018983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84018983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114730 + ... + 115459.

It is an arithmetic number, because the mean of its divisors is an integer number (12775545).

Almost surely, 2^84018985 is an apocalyptic number.

It is an amenable number.

84018985 is a deficient number, since it is larger than the sum of its proper divisors (18185375).

84018985 is a wasteful number, since it uses less digits than its factorization.

84018985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230267.

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 84018985 is about 9166.1870480588. The cubic root of 84018985 is about 437.9849056188.

The spelling of 84018985 in words is "eighty-four million, eighteen thousand, nine hundred eighty-five".