14400421993 has 4 divisors (see below), whose sum is σ = 15158338960. Its totient is φ = 13642505028.

The previous prime is 14400421927. The next prime is 14400422021. The reversal of 14400421993 is 39912400441.

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.

It is a cyclic number.

It is not a de Polignac number, because 14400421993 - 2⁹ = 14400421481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14400421393) 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, 378958455 + ... + 378958492.

It is an arithmetic number, because the mean of its divisors is an integer number (3789584740).

Almost surely, 2^14400421993 is an apocalyptic number.

It is an amenable number.

14400421993 is a deficient number, since it is larger than the sum of its proper divisors (757916967).

14400421993 is an equidigital number, since it uses as much as digits as its factorization.

14400421993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757916966.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 14400421993 in words is "fourteen billion, four hundred million, four hundred twenty-one thousand, nine hundred ninety-three".