84305993 has 2 divisors, whose sum is σ = 84305994. Its totient is φ = 84305992.

The previous prime is 84305959. The next prime is 84306071. The reversal of 84305993 is 39950348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44262409 + 40043584 = 6653^2 + 6328^2 .

It is a cyclic number.

It is not a de Polignac number, because 84305993 - 2¹⁴ = 84289609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84305993.

It is not a weakly prime, because it can be changed into another prime (84305293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42152996 + 42152997.

It is an arithmetic number, because the mean of its divisors is an integer number (42152997).

Almost surely, 2^84305993 is an apocalyptic number.

It is an amenable number.

84305993 is a deficient number, since it is larger than the sum of its proper divisors (1).

84305993 is an equidigital number, since it uses as much as digits as its factorization.

84305993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 84305993 is about 9181.8295017932. The cubic root of 84305993 is about 438.4830561537.

The spelling of 84305993 in words is "eighty-four million, three hundred five thousand, nine hundred ninety-three".