73026389 has 2 divisors, whose sum is σ = 73026390. Its totient is φ = 73026388.

The previous prime is 73026377. The next prime is 73026461. The reversal of 73026389 is 98362037.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67782289 + 5244100 = 8233^2 + 2290^2 .

It is an emirp because it is prime and its reverse (98362037) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73026389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73026319) 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, 36513194 + 36513195.

It is an arithmetic number, because the mean of its divisors is an integer number (36513195).

Almost surely, 2^73026389 is an apocalyptic number.

It is an amenable number.

73026389 is a deficient number, since it is larger than the sum of its proper divisors (1).

73026389 is an equidigital number, since it uses as much as digits as its factorization.

73026389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 73026389 is about 8545.5479051960. The cubic root of 73026389 is about 417.9842736542.

The spelling of 73026389 in words is "seventy-three million, twenty-six thousand, three hundred eighty-nine".