73395989 has 2 divisors, whose sum is σ = 73395990. Its totient is φ = 73395988.

The previous prime is 73395943. The next prime is 73395991. The reversal of 73395989 is 98959337.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73393489 + 2500 = 8567^2 + 50^2 .

It is an emirp because it is prime and its reverse (98959337) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73395989 is a prime.

Together with 73395991, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73395989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73392989) 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, 36697994 + 36697995.

It is an arithmetic number, because the mean of its divisors is an integer number (36697995).

Almost surely, 2^73395989 is an apocalyptic number.

It is an amenable number.

73395989 is a deficient number, since it is larger than the sum of its proper divisors (1).

73395989 is an equidigital number, since it uses as much as digits as its factorization.

73395989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 53.

The square root of 73395989 is about 8567.1459074770. The cubic root of 73395989 is about 418.6882524532.

The spelling of 73395989 in words is "seventy-three million, three hundred ninety-five thousand, nine hundred eighty-nine".