84004177 has 2 divisors, whose sum is σ = 84004178. Its totient is φ = 84004176.

The previous prime is 84004139. The next prime is 84004199. The reversal of 84004177 is 77140048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83978896 + 25281 = 9164^2 + 159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84004177 is a prime.

It is not a weakly prime, because it can be changed into another prime (84004117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42002088 + 42002089.

It is an arithmetic number, because the mean of its divisors is an integer number (42002089).

Almost surely, 2^84004177 is an apocalyptic number.

It is an amenable number.

84004177 is a deficient number, since it is larger than the sum of its proper divisors (1).

84004177 is an equidigital number, since it uses as much as digits as its factorization.

84004177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 84004177 is about 9165.3792611108. The cubic root of 84004177 is about 437.9591730952.

The spelling of 84004177 in words is "eighty-four million, four thousand, one hundred seventy-seven".