84380393 has 2 divisors, whose sum is σ = 84380394. Its totient is φ = 84380392.

The previous prime is 84380389. The next prime is 84380407. The reversal of 84380393 is 39308348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50239744 + 34140649 = 7088^2 + 5843^2 .

It is a cyclic number.

It is not a de Polignac number, because 84380393 - 2² = 84380389 is a prime.

It is not a weakly prime, because it can be changed into another prime (84380323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42190196 + 42190197.

It is an arithmetic number, because the mean of its divisors is an integer number (42190197).

Almost surely, 2^84380393 is an apocalyptic number.

It is an amenable number.

84380393 is a deficient number, since it is larger than the sum of its proper divisors (1).

84380393 is an equidigital number, since it uses as much as digits as its factorization.

84380393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 84380393 is about 9185.8800884836. The cubic root of 84380393 is about 438.6120052603.

The spelling of 84380393 in words is "eighty-four million, three hundred eighty thousand, three hundred ninety-three".