73439903 has 2 divisors, whose sum is σ = 73439904. Its totient is φ = 73439902.

The previous prime is 73439869. The next prime is 73439911. The reversal of 73439903 is 30993437.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73439903 - 2⁸ = 73439647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73439923) 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, 36719951 + 36719952.

It is an arithmetic number, because the mean of its divisors is an integer number (36719952).

Almost surely, 2^73439903 is an apocalyptic number.

73439903 is a deficient number, since it is larger than the sum of its proper divisors (1).

73439903 is an equidigital number, since it uses as much as digits as its factorization.

73439903 is an odious number, because the sum of its binary digits is odd.

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

The square root of 73439903 is about 8569.7084547842. The cubic root of 73439903 is about 418.7717384423.

The spelling of 73439903 in words is "seventy-three million, four hundred thirty-nine thousand, nine hundred three".