450005389 has 2 divisors, whose sum is σ = 450005390. Its totient is φ = 450005388.

The previous prime is 450005377. The next prime is 450005417. The reversal of 450005389 is 983500054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355624164 + 94381225 = 18858^2 + 9715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450005389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450005089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225002694 + 225002695.

It is an arithmetic number, because the mean of its divisors is an integer number (225002695).

Almost surely, 2^450005389 is an apocalyptic number.

It is an amenable number.

450005389 is a deficient number, since it is larger than the sum of its proper divisors (1).

450005389 is an equidigital number, since it uses as much as digits as its factorization.

450005389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 450005389 is about 21213.3304551643. The cubic root of 450005389 is about 766.3124913751.

The spelling of 450005389 in words is "four hundred fifty million, five thousand, three hundred eighty-nine".