73809839 has 2 divisors, whose sum is σ = 73809840. Its totient is φ = 73809838.

The previous prime is 73809821. The next prime is 73809847. The reversal of 73809839 is 93890837.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73809839 - 2⁸ = 73809583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73809793 and 73809802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73809899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36904919 + 36904920.

It is an arithmetic number, because the mean of its divisors is an integer number (36904920).

Almost surely, 2^73809839 is an apocalyptic number.

73809839 is a deficient number, since it is larger than the sum of its proper divisors (1).

73809839 is an equidigital number, since it uses as much as digits as its factorization.

73809839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 73809839 is about 8591.2652735205. The cubic root of 73809839 is about 419.4737153375.

The spelling of 73809839 in words is "seventy-three million, eight hundred nine thousand, eight hundred thirty-nine".