84051005 has 4 divisors (see below), whose sum is σ = 100861212. Its totient is φ = 67240800.

The previous prime is 84051001. The next prime is 84051047. The reversal of 84051005 is 50015048.

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 54479161 + 29571844 = 7381^2 + 5438^2 .

It is not a de Polignac number, because 84051005 - 2² = 84051001 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 (84051001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8405096 + ... + 8405105.

It is an arithmetic number, because the mean of its divisors is an integer number (25215303).

Almost surely, 2^84051005 is an apocalyptic number.

It is an amenable number.

84051005 is a deficient number, since it is larger than the sum of its proper divisors (16810207).

84051005 is a wasteful number, since it uses less digits than its factorization.

84051005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16810206.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 84051005 is about 9167.9335185199. The cubic root of 84051005 is about 438.0405378686.

The spelling of 84051005 in words is "eighty-four million, fifty-one thousand, five".