73223993 has 2 divisors, whose sum is σ = 73223994. Its totient is φ = 73223992.

The previous prime is 73223987. The next prime is 73224013. The reversal of 73223993 is 39932237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44462224 + 28761769 = 6668^2 + 5363^2 .

It is a cyclic number.

It is not a de Polignac number, because 73223993 - 2¹⁶ = 73158457 is a prime.

It is equal to p_4296377 and since 73223993 and 4296377 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (73223903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36611996 + 36611997.

It is an arithmetic number, because the mean of its divisors is an integer number (36611997).

Almost surely, 2^73223993 is an apocalyptic number.

It is an amenable number.

73223993 is a deficient number, since it is larger than the sum of its proper divisors (1).

73223993 is an equidigital number, since it uses as much as digits as its factorization.

73223993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 38.

The square root of 73223993 is about 8557.1019042664. The cubic root of 73223993 is about 418.3609456050.

The spelling of 73223993 in words is "seventy-three million, two hundred twenty-three thousand, nine hundred ninety-three".