444999161 has 2 divisors, whose sum is σ = 444999162. Its totient is φ = 444999160.

The previous prime is 444999127. The next prime is 444999173. The reversal of 444999161 is 161999444.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367910761 + 77088400 = 19181^2 + 8780^2 .

It is a cyclic number.

It is not a de Polignac number, because 444999161 - 2⁶ = 444999097 is a prime.

It is not a weakly prime, because it can be changed into another prime (444993161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222499580 + 222499581.

It is an arithmetic number, because the mean of its divisors is an integer number (222499581).

Almost surely, 2^444999161 is an apocalyptic number.

It is an amenable number.

444999161 is a deficient number, since it is larger than the sum of its proper divisors (1).

444999161 is an equidigital number, since it uses as much as digits as its factorization.

444999161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 47.

The square root of 444999161 is about 21095.0032235124. The cubic root of 444999161 is about 763.4601923411.

The spelling of 444999161 in words is "four hundred forty-four million, nine hundred ninety-nine thousand, one hundred sixty-one".