73400070389 has 2 divisors, whose sum is σ = 73400070390. Its totient is φ = 73400070388.

The previous prime is 73400070371. The next prime is 73400070391. The reversal of 73400070389 is 98307000437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54087409489 + 19312660900 = 232567^2 + 138970^2 .

It is an emirp because it is prime and its reverse (98307000437) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73400070389 is a prime.

It is a super-2 number, since 2×73400070389² (a number of 23 digits) contains 22 as substring.

Together with 73400070391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73400070329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36700035194 + 36700035195.

It is an arithmetic number, because the mean of its divisors is an integer number (36700035195).

Almost surely, 2^73400070389 is an apocalyptic number.

It is an amenable number.

73400070389 is a deficient number, since it is larger than the sum of its proper divisors (1).

73400070389 is an equidigital number, since it uses as much as digits as its factorization.

73400070389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 73400070389 in words is "seventy-three billion, four hundred million, seventy thousand, three hundred eighty-nine".