944444161 has 4 divisors (see below), whose sum is σ = 951338052. Its totient is φ = 937550272.

The previous prime is 944444119. The next prime is 944444173. The reversal of 944444161 is 161444449.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161444449 = 5813 ⋅27773.

It can be written as a sum of positive squares in 2 ways, for example, as 254593936 + 689850225 = 15956^2 + 26265^2 .

It is a cyclic number.

It is not a de Polignac number, because 944444161 - 2¹⁵ = 944411393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 944444161.

It is not an unprimeable number, because it can be changed into a prime (944441161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3446740 + ... + 3447013.

It is an arithmetic number, because the mean of its divisors is an integer number (237834513).

Almost surely, 2^944444161 is an apocalyptic number.

It is an amenable number.

944444161 is a deficient number, since it is larger than the sum of its proper divisors (6893891).

944444161 is a wasteful number, since it uses less digits than its factorization.

944444161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893890.

The product of its digits is 55296, while the sum is 37.

The square root of 944444161 is about 30731.8102460626. The cubic root of 944444161 is about 981.1274546626.

The spelling of 944444161 in words is "nine hundred forty-four million, four hundred forty-four thousand, one hundred sixty-one".