406708369 has 2 divisors, whose sum is σ = 406708370. Its totient is φ = 406708368.

The previous prime is 406708327. The next prime is 406708387. The reversal of 406708369 is 963807604.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303177744 + 103530625 = 17412^2 + 10175^2 .

It is a cyclic number.

It is not a de Polignac number, because 406708369 - 2¹⁹ = 406184081 is a prime.

It is a super-2 number, since 2×406708369² = 330823394829280322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (406708469) 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, 203354184 + 203354185.

It is an arithmetic number, because the mean of its divisors is an integer number (203354185).

Almost surely, 2^406708369 is an apocalyptic number.

It is an amenable number.

406708369 is a deficient number, since it is larger than the sum of its proper divisors (1).

406708369 is an equidigital number, since it uses as much as digits as its factorization.

406708369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 406708369 is about 20167.0119006262. The cubic root of 406708369 is about 740.9024593523.

The spelling of 406708369 in words is "four hundred six million, seven hundred eight thousand, three hundred sixty-nine".