73399889 has 2 divisors, whose sum is σ = 73399890. Its totient is φ = 73399888.

The previous prime is 73399873. The next prime is 73399891. The reversal of 73399889 is 98899337.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73393489 + 6400 = 8567^2 + 80^2 .

It is an emirp because it is prime and its reverse (98899337) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73399889 - 2⁴ = 73399873 is a prime.

Together with 73399891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73399819) 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, 36699944 + 36699945.

It is an arithmetic number, because the mean of its divisors is an integer number (36699945).

Almost surely, 2^73399889 is an apocalyptic number.

It is an amenable number.

73399889 is a deficient number, since it is larger than the sum of its proper divisors (1).

73399889 is an equidigital number, since it uses as much as digits as its factorization.

73399889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 56.

The square root of 73399889 is about 8567.3735181793. The cubic root of 73399889 is about 418.6956681866.

The spelling of 73399889 in words is "seventy-three million, three hundred ninety-nine thousand, eight hundred eighty-nine".