84185393 has 2 divisors, whose sum is σ = 84185394. Its totient is φ = 84185392.

The previous prime is 84185329. The next prime is 84185401. The reversal of 84185393 is 39358148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70694464 + 13490929 = 8408^2 + 3673^2 .

It is a cyclic number.

It is not a de Polignac number, because 84185393 - 2⁶ = 84185329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84185393.

It is not a weakly prime, because it can be changed into another prime (84185303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42092696 + 42092697.

It is an arithmetic number, because the mean of its divisors is an integer number (42092697).

Almost surely, 2^84185393 is an apocalyptic number.

It is an amenable number.

84185393 is a deficient number, since it is larger than the sum of its proper divisors (1).

84185393 is an equidigital number, since it uses as much as digits as its factorization.

84185393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The square root of 84185393 is about 9175.2598328331. The cubic root of 84185393 is about 438.2738725585.

The spelling of 84185393 in words is "eighty-four million, one hundred eighty-five thousand, three hundred ninety-three".