73427749 has 2 divisors, whose sum is σ = 73427750. Its totient is φ = 73427748.

The previous prime is 73427719. The next prime is 73427803. The reversal of 73427749 is 94772437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62252100 + 11175649 = 7890^2 + 3343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73427749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73427719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36713874 + 36713875.

It is an arithmetic number, because the mean of its divisors is an integer number (36713875).

Almost surely, 2^73427749 is an apocalyptic number.

It is an amenable number.

73427749 is a deficient number, since it is larger than the sum of its proper divisors (1).

73427749 is an equidigital number, since it uses as much as digits as its factorization.

73427749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 43.

The square root of 73427749 is about 8568.9992998016. Note that the first 3 decimals coincide. The cubic root of 73427749 is about 418.7486355046.

The spelling of 73427749 in words is "seventy-three million, four hundred twenty-seven thousand, seven hundred forty-nine".