84356005 has 4 divisors (see below), whose sum is σ = 101227212. Its totient is φ = 67484800.

The previous prime is 84356003. The next prime is 84356021. The reversal of 84356005 is 50065348.

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 15233409 + 69122596 = 3903^2 + 8314^2 .

It is not a de Polignac number, because 84356005 - 2¹ = 84356003 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84356003) 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, 8435596 + ... + 8435605.

It is an arithmetic number, because the mean of its divisors is an integer number (25306803).

Almost surely, 2^84356005 is an apocalyptic number.

It is an amenable number.

84356005 is a deficient number, since it is larger than the sum of its proper divisors (16871207).

84356005 is a wasteful number, since it uses less digits than its factorization.

84356005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16871206.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 84356005 is about 9184.5525204008. The cubic root of 84356005 is about 438.5697446517.

The spelling of 84356005 in words is "eighty-four million, three hundred fifty-six thousand, five".