469444666609 has 2 divisors, whose sum is σ = 469444666610. Its totient is φ = 469444666608.

The previous prime is 469444666591. The next prime is 469444666643. The reversal of 469444666609 is 906666444964.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264278246400 + 205166420209 = 514080^2 + 452953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-469444666609 is a prime.

It is not a weakly prime, because it can be changed into another prime (469444666109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234722333304 + 234722333305.

It is an arithmetic number, because the mean of its divisors is an integer number (234722333305).

Almost surely, 2^469444666609 is an apocalyptic number.

It is an amenable number.

469444666609 is a deficient number, since it is larger than the sum of its proper divisors (1).

469444666609 is an equidigital number, since it uses as much as digits as its factorization.

469444666609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161243136, while the sum is 64.

The spelling of 469444666609 in words is "four hundred sixty-nine billion, four hundred forty-four million, six hundred sixty-six thousand, six hundred nine".