944429716217 has 4 divisors (see below), whose sum is σ = 1017078155940. Its totient is φ = 871781276496.

The previous prime is 944429716163. The next prime is 944429716253. The reversal of 944429716217 is 712617924449.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712617924449 = 6791 ⋅104935639.

It can be written as a sum of positive squares in 2 ways, for example, as 247052737936 + 697376978281 = 497044^2 + 835091^2 .

It is not a de Polignac number, because 944429716217 - 2²² = 944425521913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (944429716297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36324219842 + ... + 36324219867.

It is an arithmetic number, because the mean of its divisors is an integer number (254269538985).

Almost surely, 2^944429716217 is an apocalyptic number.

It is an amenable number.

944429716217 is a deficient number, since it is larger than the sum of its proper divisors (72648439723).

944429716217 is a wasteful number, since it uses less digits than its factorization.

944429716217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72648439722.

The product of its digits is 6096384, while the sum is 56.

The spelling of 944429716217 in words is "nine hundred forty-four billion, four hundred twenty-nine million, seven hundred sixteen thousand, two hundred seventeen".