450169949 has 2 divisors, whose sum is σ = 450169950. Its totient is φ = 450169948.

The previous prime is 450169943. The next prime is 450169963. The reversal of 450169949 is 949961054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272481049 + 177688900 = 16507^2 + 13330^2 .

It is a cyclic number.

It is not a de Polignac number, because 450169949 - 2¹² = 450165853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450169943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225084974 + 225084975.

It is an arithmetic number, because the mean of its divisors is an integer number (225084975).

Almost surely, 2^450169949 is an apocalyptic number.

It is an amenable number.

450169949 is a deficient number, since it is larger than the sum of its proper divisors (1).

450169949 is an equidigital number, since it uses as much as digits as its factorization.

450169949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 450169949 is about 21217.2087938070. The cubic root of 450169949 is about 766.4058895271.

The spelling of 450169949 in words is "four hundred fifty million, one hundred sixty-nine thousand, nine hundred forty-nine".