284400073 has 2 divisors, whose sum is σ = 284400074. Its totient is φ = 284400072.

The previous prime is 284400007. The next prime is 284400101. The reversal of 284400073 is 370004482.

It is an a-pointer prime, because the next prime (284400101) can be obtained adding 284400073 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226442304 + 57957769 = 15048^2 + 7613^2 .

It is a cyclic number.

It is not a de Polignac number, because 284400073 - 2¹³ = 284391881 is a prime.

It is not a weakly prime, because it can be changed into another prime (284400673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142200036 + 142200037.

It is an arithmetic number, because the mean of its divisors is an integer number (142200037).

Almost surely, 2^284400073 is an apocalyptic number.

It is an amenable number.

284400073 is a deficient number, since it is larger than the sum of its proper divisors (1).

284400073 is an equidigital number, since it uses as much as digits as its factorization.

284400073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 284400073 is about 16864.1653514190. The cubic root of 284400073 is about 657.6223546915.

The spelling of 284400073 in words is "two hundred eighty-four million, four hundred thousand, seventy-three".