73333993 has 2 divisors, whose sum is σ = 73333994. Its totient is φ = 73333992.

The previous prime is 73333987. The next prime is 73334057. The reversal of 73333993 is 39933337.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54567769 + 18766224 = 7387^2 + 4332^2 .

It is an emirp because it is prime and its reverse (39933337) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73333993 - 2⁵ = 73333961 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (73333933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36666996 + 36666997.

It is an arithmetic number, because the mean of its divisors is an integer number (36666997).

Almost surely, 2^73333993 is an apocalyptic number.

It is an amenable number.

73333993 is a deficient number, since it is larger than the sum of its proper divisors (1).

73333993 is an equidigital number, since it uses as much as digits as its factorization.

73333993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137781, while the sum is 40.

The square root of 73333993 is about 8563.5269019254. The cubic root of 73333993 is about 418.5703336172.

The spelling of 73333993 in words is "seventy-three million, three hundred thirty-three thousand, nine hundred ninety-three".