13899623993 has 2 divisors, whose sum is σ = 13899623994. Its totient is φ = 13899623992.

The previous prime is 13899623917. The next prime is 13899624001. The reversal of 13899623993 is 39932699831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13598358544 + 301265449 = 116612^2 + 17357^2 .

It is a cyclic number.

It is not a de Polignac number, because 13899623993 - 2¹⁸ = 13899361849 is a prime.

It is not a weakly prime, because it can be changed into another prime (13899623893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6949811996 + 6949811997.

It is an arithmetic number, because the mean of its divisors is an integer number (6949811997).

Almost surely, 2^13899623993 is an apocalyptic number.

It is an amenable number.

13899623993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13899623993 is an equidigital number, since it uses as much as digits as its factorization.

13899623993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17006112, while the sum is 62.

The spelling of 13899623993 in words is "thirteen billion, eight hundred ninety-nine million, six hundred twenty-three thousand, nine hundred ninety-three".