406367321 has 2 divisors, whose sum is σ = 406367322. Its totient is φ = 406367320.

The previous prime is 406367317. The next prime is 406367327. The reversal of 406367321 is 123763604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335622400 + 70744921 = 18320^2 + 8411^2 .

It is a cyclic number.

It is not a de Polignac number, because 406367321 - 2² = 406367317 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (406367327) 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, 203183660 + 203183661.

It is an arithmetic number, because the mean of its divisors is an integer number (203183661).

Almost surely, 2^406367321 is an apocalyptic number.

It is an amenable number.

406367321 is a deficient number, since it is larger than the sum of its proper divisors (1).

406367321 is an equidigital number, since it uses as much as digits as its factorization.

406367321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 406367321 is about 20158.5545364741. The cubic root of 406367321 is about 740.6953052145.

The spelling of 406367321 in words is "four hundred six million, three hundred sixty-seven thousand, three hundred twenty-one".