405344144040089 has 2 divisors, whose sum is σ = 405344144040090. Its totient is φ = 405344144040088.

The previous prime is 405344144040079. The next prime is 405344144040139. The reversal of 405344144040089 is 980040441443504.

It is an a-pointer prime, because the next prime (405344144040139) can be obtained adding 405344144040089 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299722379250064 + 105621764790025 = 17312492^2 + 10277245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405344144040089 is a prime.

It is not a weakly prime, because it can be changed into another prime (405344144040079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202672072020044 + 202672072020045.

It is an arithmetic number, because the mean of its divisors is an integer number (202672072020045).

Almost surely, 2^{405344144040089} is an apocalyptic number.

It is an amenable number.

405344144040089 is a deficient number, since it is larger than the sum of its proper divisors (1).

405344144040089 is an equidigital number, since it uses as much as digits as its factorization.

405344144040089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4423680, while the sum is 50.

The spelling of 405344144040089 in words is "four hundred five trillion, three hundred forty-four billion, one hundred forty-four million, forty thousand, eighty-nine".