13922972393 has 4 divisors (see below), whose sum is σ = 15188697168. Its totient is φ = 12657247620.

The previous prime is 13922972381. The next prime is 13922972407. The reversal of 13922972393 is 39327922931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39327922931 = 11 ⋅3575265721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13922972393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13922971393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632862371 + ... + 632862392.

It is an arithmetic number, because the mean of its divisors is an integer number (3797174292).

Almost surely, 2^13922972393 is an apocalyptic number.

It is an amenable number.

13922972393 is a deficient number, since it is larger than the sum of its proper divisors (1265724775).

13922972393 is a wasteful number, since it uses less digits than its factorization.

13922972393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265724774.

The product of its digits is 1102248, while the sum is 50.

The spelling of 13922972393 in words is "thirteen billion, nine hundred twenty-two million, nine hundred seventy-two thousand, three hundred ninety-three".