73909061 has 2 divisors, whose sum is σ = 73909062. Its totient is φ = 73909060.

The previous prime is 73909039. The next prime is 73909067. The reversal of 73909061 is 16090937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61701025 + 12208036 = 7855^2 + 3494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73909061 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73909067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36954530 + 36954531.

It is an arithmetic number, because the mean of its divisors is an integer number (36954531).

Almost surely, 2^73909061 is an apocalyptic number.

It is an amenable number.

73909061 is a deficient number, since it is larger than the sum of its proper divisors (1).

73909061 is an equidigital number, since it uses as much as digits as its factorization.

73909061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 73909061 is about 8597.0379201211. The cubic root of 73909061 is about 419.6615962722.

Adding to 73909061 its reverse (16090937), we get a palindrome (89999998).

The spelling of 73909061 in words is "seventy-three million, nine hundred nine thousand, sixty-one".