450472489 has 2 divisors, whose sum is σ = 450472490. Its totient is φ = 450472488.

The previous prime is 450472483. The next prime is 450472499. The reversal of 450472489 is 984274054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253350889 + 197121600 = 15917^2 + 14040^2 .

It is a cyclic number.

It is not a de Polignac number, because 450472489 - 2⁷ = 450472361 is a prime.

It is equal to p_23876638 and since 450472489 and 23876638 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (450472483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225236244 + 225236245.

It is an arithmetic number, because the mean of its divisors is an integer number (225236245).

Almost surely, 2^450472489 is an apocalyptic number.

It is an amenable number.

450472489 is a deficient number, since it is larger than the sum of its proper divisors (1).

450472489 is an equidigital number, since it uses as much as digits as its factorization.

450472489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 450472489 is about 21224.3371863528. The cubic root of 450472489 is about 766.5775406371.

The spelling of 450472489 in words is "four hundred fifty million, four hundred seventy-two thousand, four hundred eighty-nine".