405455244209 has 2 divisors, whose sum is σ = 405455244210. Its totient is φ = 405455244208.

The previous prime is 405455244163. The next prime is 405455244241. The reversal of 405455244209 is 902442554504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399965175184 + 5490069025 = 632428^2 + 74095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405455244209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405455244209.

It is not a weakly prime, because it can be changed into another prime (405455241209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202727622104 + 202727622105.

It is an arithmetic number, because the mean of its divisors is an integer number (202727622105).

Almost surely, 2^405455244209 is an apocalyptic number.

It is an amenable number.

405455244209 is a deficient number, since it is larger than the sum of its proper divisors (1).

405455244209 is an equidigital number, since it uses as much as digits as its factorization.

405455244209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152000, while the sum is 44.

The spelling of 405455244209 in words is "four hundred five billion, four hundred fifty-five million, two hundred forty-four thousand, two hundred nine".