938933493397 has 4 divisors (see below), whose sum is σ = 938936056716. Its totient is φ = 938930930080.

The previous prime is 938933493313. The next prime is 938933493401. The reversal of 938933493397 is 793394339839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 793394339839 = 240347 ⋅3301037.

It can be written as a sum of positive squares in 2 ways, for example, as 15260649156 + 923672844241 = 123534^2 + 961079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938933493397 is a prime.

It is a super-2 number, since 2×938933493397² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938933493307) 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, 617488 + ... + 1503049.

It is an arithmetic number, because the mean of its divisors is an integer number (234734014179).

Almost surely, 2^938933493397 is an apocalyptic number.

It is an amenable number.

938933493397 is a deficient number, since it is larger than the sum of its proper divisors (2563319).

938933493397 is a wasteful number, since it uses less digits than its factorization.

938933493397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563318.

The product of its digits is 357128352, while the sum is 70.

The spelling of 938933493397 in words is "nine hundred thirty-eight billion, nine hundred thirty-three million, four hundred ninety-three thousand, three hundred ninety-seven".