73739993 has 2 divisors, whose sum is σ = 73739994. Its totient is φ = 73739992.

The previous prime is 73739989. The next prime is 73740053. The reversal of 73739993 is 39993737.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49168144 + 24571849 = 7012^2 + 4957^2 .

It is a cyclic number.

It is not a de Polignac number, because 73739993 - 2² = 73739989 is a prime.

It is not a weakly prime, because it can be changed into another prime (73739903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36869996 + 36869997.

It is an arithmetic number, because the mean of its divisors is an integer number (36869997).

Almost surely, 2^73739993 is an apocalyptic number.

It is an amenable number.

73739993 is a deficient number, since it is larger than the sum of its proper divisors (1).

73739993 is an equidigital number, since it uses as much as digits as its factorization.

73739993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 964467, while the sum is 50.

The square root of 73739993 is about 8587.1993688280. The cubic root of 73739993 is about 419.3413580615.

The spelling of 73739993 in words is "seventy-three million, seven hundred thirty-nine thousand, nine hundred ninety-three".