84000073 has 2 divisors, whose sum is σ = 84000074. Its totient is φ = 84000072.

The previous prime is 84000053. The next prime is 84000079. The reversal of 84000073 is 37000048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61418569 + 22581504 = 7837^2 + 4752^2 .

It is a cyclic number.

It is not a de Polignac number, because 84000073 - 2⁵ = 84000041 is a prime.

It is not a weakly prime, because it can be changed into another prime (84000079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42000036 + 42000037.

It is an arithmetic number, because the mean of its divisors is an integer number (42000037).

Almost surely, 2^84000073 is an apocalyptic number.

It is an amenable number.

84000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

84000073 is an equidigital number, since it uses as much as digits as its factorization.

84000073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 84000073 is about 9165.1553723873. The cubic root of 84000073 is about 437.9520408558.

Adding to 84000073 its reverse (37000048), we get a palindrome (121000121).

The spelling of 84000073 in words is "eighty-four million, seventy-three", and thus it is an aban number.