450439487 has 2 divisors, whose sum is σ = 450439488. Its totient is φ = 450439486.

The previous prime is 450439481. The next prime is 450439501. The reversal of 450439487 is 784934054.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450439487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450439481) 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, 225219743 + 225219744.

It is an arithmetic number, because the mean of its divisors is an integer number (225219744).

Almost surely, 2^450439487 is an apocalyptic number.

450439487 is a deficient number, since it is larger than the sum of its proper divisors (1).

450439487 is an equidigital number, since it uses as much as digits as its factorization.

450439487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 450439487 is about 21223.5597155614. The cubic root of 450439487 is about 766.5588201377.

The spelling of 450439487 in words is "four hundred fifty million, four hundred thirty-nine thousand, four hundred eighty-seven".