84053993 has 2 divisors, whose sum is σ = 84053994. Its totient is φ = 84053992.

The previous prime is 84053987. The next prime is 84054023. The reversal of 84053993 is 39935048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69022864 + 15031129 = 8308^2 + 3877^2 .

It is a cyclic number.

It is not a de Polignac number, because 84053993 - 2⁸ = 84053737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84053993.

It is not a weakly prime, because it can be changed into another prime (84053903) 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, 42026996 + 42026997.

It is an arithmetic number, because the mean of its divisors is an integer number (42026997).

Almost surely, 2^84053993 is an apocalyptic number.

It is an amenable number.

84053993 is a deficient number, since it is larger than the sum of its proper divisors (1).

84053993 is an equidigital number, since it uses as much as digits as its factorization.

84053993 is an odious number, because the sum of its binary digits is odd.

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

The square root of 84053993 is about 9168.0964763685. The cubic root of 84053993 is about 438.0457285645.

The spelling of 84053993 in words is "eighty-four million, fifty-three thousand, nine hundred ninety-three".