450220649 has 2 divisors, whose sum is σ = 450220650. Its totient is φ = 450220648.

The previous prime is 450220643. The next prime is 450220691. The reversal of 450220649 is 946022054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328515625 + 121705024 = 18125^2 + 11032^2 .

It is a cyclic number.

It is not a de Polignac number, because 450220649 - 2²⁸ = 181785193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (450220643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225110324 + 225110325.

It is an arithmetic number, because the mean of its divisors is an integer number (225110325).

Almost surely, 2^450220649 is an apocalyptic number.

It is an amenable number.

450220649 is a deficient number, since it is larger than the sum of its proper divisors (1).

450220649 is an equidigital number, since it uses as much as digits as its factorization.

450220649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 450220649 is about 21218.4035450361. The cubic root of 450220649 is about 766.4346603799.

The spelling of 450220649 in words is "four hundred fifty million, two hundred twenty thousand, six hundred forty-nine".