84136973 has 2 divisors, whose sum is σ = 84136974. Its totient is φ = 84136972.

The previous prime is 84136963. The next prime is 84136979. The reversal of 84136973 is 37963148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73496329 + 10640644 = 8573^2 + 3262^2 .

It is a cyclic number.

It is not a de Polignac number, because 84136973 - 2¹⁰ = 84135949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84136973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84136979) 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, 42068486 + 42068487.

It is an arithmetic number, because the mean of its divisors is an integer number (42068487).

Almost surely, 2^84136973 is an apocalyptic number.

It is an amenable number.

84136973 is a deficient number, since it is larger than the sum of its proper divisors (1).

84136973 is an equidigital number, since it uses as much as digits as its factorization.

84136973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 84136973 is about 9172.6208359443. The cubic root of 84136973 is about 438.1898306997.

The spelling of 84136973 in words is "eighty-four million, one hundred thirty-six thousand, nine hundred seventy-three".