406488449 has 2 divisors, whose sum is σ = 406488450. Its totient is φ = 406488448.

The previous prime is 406488431. The next prime is 406488457. The reversal of 406488449 is 944884604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232776049 + 173712400 = 15257^2 + 13180^2 .

It is a cyclic number.

It is not a de Polignac number, because 406488449 - 2²⁰ = 405439873 is a prime.

It is not a weakly prime, because it can be changed into another prime (406488409) 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, 203244224 + 203244225.

It is an arithmetic number, because the mean of its divisors is an integer number (203244225).

Almost surely, 2^406488449 is an apocalyptic number.

It is an amenable number.

406488449 is a deficient number, since it is larger than the sum of its proper divisors (1).

406488449 is an equidigital number, since it uses as much as digits as its factorization.

406488449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 47.

The square root of 406488449 is about 20161.5586947041. The cubic root of 406488449 is about 740.7688921914.

The spelling of 406488449 in words is "four hundred six million, four hundred eighty-eight thousand, four hundred forty-nine".