406445797 has 2 divisors, whose sum is σ = 406445798. Its totient is φ = 406445796.

The previous prime is 406445779. The next prime is 406445807. The reversal of 406445797 is 797544604.

Together with previous prime (406445779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406385281 + 60516 = 20159^2 + 246^2 .

It is a cyclic number.

It is not a de Polignac number, because 406445797 - 2¹¹ = 406443749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406445717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203222898 + 203222899.

It is an arithmetic number, because the mean of its divisors is an integer number (203222899).

Almost surely, 2^406445797 is an apocalyptic number.

It is an amenable number.

406445797 is a deficient number, since it is larger than the sum of its proper divisors (1).

406445797 is an equidigital number, since it uses as much as digits as its factorization.

406445797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 406445797 is about 20160.5009114357. The cubic root of 406445797 is about 740.7429821645.

The spelling of 406445797 in words is "four hundred six million, four hundred forty-five thousand, seven hundred ninety-seven".