84870293 has 2 divisors, whose sum is σ = 84870294. Its totient is φ = 84870292.

The previous prime is 84870271. The next prime is 84870349. The reversal of 84870293 is 39207848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74770609 + 10099684 = 8647^2 + 3178^2 .

It is a cyclic number.

It is not a de Polignac number, because 84870293 - 2¹⁰ = 84869269 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84870293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84870223) 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, 42435146 + 42435147.

It is an arithmetic number, because the mean of its divisors is an integer number (42435147).

Almost surely, 2^84870293 is an apocalyptic number.

It is an amenable number.

84870293 is a deficient number, since it is larger than the sum of its proper divisors (1).

84870293 is an equidigital number, since it uses as much as digits as its factorization.

84870293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 84870293 is about 9212.5074219780. The cubic root of 84870293 is about 439.4592064636.

The spelling of 84870293 in words is "eighty-four million, eight hundred seventy thousand, two hundred ninety-three".