405982211 has 2 divisors, whose sum is σ = 405982212. Its totient is φ = 405982210.

The previous prime is 405982141. The next prime is 405982243. The reversal of 405982211 is 112289504.

It is an a-pointer prime, because the next prime (405982243) can be obtained adding 405982211 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405982211 - 2¹⁴ = 405965827 is a prime.

It is not a weakly prime, because it can be changed into another prime (405982271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202991105 + 202991106.

It is an arithmetic number, because the mean of its divisors is an integer number (202991106).

Almost surely, 2^405982211 is an apocalyptic number.

405982211 is a deficient number, since it is larger than the sum of its proper divisors (1).

405982211 is an equidigital number, since it uses as much as digits as its factorization.

405982211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 405982211 is about 20149.0002481513. Note that the first 3 decimals coincide. The cubic root of 405982211 is about 740.4612482329.

The spelling of 405982211 in words is "four hundred five million, nine hundred eighty-two thousand, two hundred eleven".