84904165 has 4 divisors (see below), whose sum is σ = 101885004. Its totient is φ = 67923328.

The previous prime is 84904163. The next prime is 84904177. The reversal of 84904165 is 56140948.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42693156 + 42211009 = 6534^2 + 6497^2 .

It is a cyclic number.

It is not a de Polignac number, because 84904165 - 2¹ = 84904163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84904163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8490412 + ... + 8490421.

It is an arithmetic number, because the mean of its divisors is an integer number (25471251).

Almost surely, 2^84904165 is an apocalyptic number.

It is an amenable number.

84904165 is a deficient number, since it is larger than the sum of its proper divisors (16980839).

84904165 is a wasteful number, since it uses less digits than its factorization.

84904165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16980838.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 84904165 is about 9214.3456088862. The cubic root of 84904165 is about 439.5176618700.

The spelling of 84904165 in words is "eighty-four million, nine hundred four thousand, one hundred sixty-five".