938665214447 has 4 divisors (see below), whose sum is σ = 938904734880. Its totient is φ = 938425694016.

The previous prime is 938665214437. The next prime is 938665214453. The reversal of 938665214447 is 744412566839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744412566839 = 19 ⋅39179608781.

It is a cyclic number.

It is not a de Polignac number, because 938665214447 - 2²⁴ = 938648437231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938665214437) 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, 119754338 + ... + 119762175.

It is an arithmetic number, because the mean of its divisors is an integer number (234726183720).

Almost surely, 2^938665214447 is an apocalyptic number.

938665214447 is a deficient number, since it is larger than the sum of its proper divisors (239520433).

938665214447 is a wasteful number, since it uses less digits than its factorization.

938665214447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239520432.

The product of its digits is 34836480, while the sum is 59.

The spelling of 938665214447 in words is "nine hundred thirty-eight billion, six hundred sixty-five million, two hundred fourteen thousand, four hundred forty-seven".