450685439 has 2 divisors, whose sum is σ = 450685440. Its totient is φ = 450685438.

The previous prime is 450685427. The next prime is 450685481. The reversal of 450685439 is 934586054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 450685439 - 2⁴ = 450685423 is a prime.

It is equal to p_23887358 and since 450685439 and 23887358 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 450685439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450685139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225342719 + 225342720.

It is an arithmetic number, because the mean of its divisors is an integer number (225342720).

Almost surely, 2^450685439 is an apocalyptic number.

450685439 is a deficient number, since it is larger than the sum of its proper divisors (1).

450685439 is an equidigital number, since it uses as much as digits as its factorization.

450685439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 450685439 is about 21229.3532402662. The cubic root of 450685439 is about 766.6983152867.

The spelling of 450685439 in words is "four hundred fifty million, six hundred eighty-five thousand, four hundred thirty-nine".