73243393 has 2 divisors, whose sum is σ = 73243394. Its totient is φ = 73243392.

The previous prime is 73243369. The next prime is 73243397. The reversal of 73243393 is 39334237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64529089 + 8714304 = 8033^2 + 2952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73243393 is a prime.

It is a super-3 number, since 3×73243393³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (73243397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36621696 + 36621697.

It is an arithmetic number, because the mean of its divisors is an integer number (36621697).

Almost surely, 2^73243393 is an apocalyptic number.

It is an amenable number.

73243393 is a deficient number, since it is larger than the sum of its proper divisors (1).

73243393 is an equidigital number, since it uses as much as digits as its factorization.

73243393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 34.

The square root of 73243393 is about 8558.2353905463. The cubic root of 73243393 is about 418.3978892595.

The spelling of 73243393 in words is "seventy-three million, two hundred forty-three thousand, three hundred ninety-three".