444709561 has 2 divisors, whose sum is σ = 444709562. Its totient is φ = 444709560.

The previous prime is 444709547. The next prime is 444709583. The reversal of 444709561 is 165907444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 413349561 + 31360000 = 20331^2 + 5600^2 .

It is a cyclic number.

It is not a de Polignac number, because 444709561 - 2²¹ = 442612409 is a prime.

It is not a weakly prime, because it can be changed into another prime (444709541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222354780 + 222354781.

It is an arithmetic number, because the mean of its divisors is an integer number (222354781).

Almost surely, 2^444709561 is an apocalyptic number.

It is an amenable number.

444709561 is a deficient number, since it is larger than the sum of its proper divisors (1).

444709561 is an equidigital number, since it uses as much as digits as its factorization.

444709561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 444709561 is about 21088.1379215899. The cubic root of 444709561 is about 763.2945395556.

The spelling of 444709561 in words is "four hundred forty-four million, seven hundred nine thousand, five hundred sixty-one".