405884273 has 2 divisors, whose sum is σ = 405884274. Its totient is φ = 405884272.

The previous prime is 405884263. The next prime is 405884291. The reversal of 405884273 is 372488504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211644304 + 194239969 = 14548^2 + 13937^2 .

It is a cyclic number.

It is not a de Polignac number, because 405884273 - 2⁴ = 405884257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405884273.

It is not a weakly prime, because it can be changed into another prime (405884263) 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, 202942136 + 202942137.

It is an arithmetic number, because the mean of its divisors is an integer number (202942137).

Almost surely, 2^405884273 is an apocalyptic number.

It is an amenable number.

405884273 is a deficient number, since it is larger than the sum of its proper divisors (1).

405884273 is an equidigital number, since it uses as much as digits as its factorization.

405884273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 405884273 is about 20146.5697576535. The cubic root of 405884273 is about 740.4017011854.

The spelling of 405884273 in words is "four hundred five million, eight hundred eighty-four thousand, two hundred seventy-three".