384799914721 has 4 divisors (see below), whose sum is σ = 385490758932. Its totient is φ = 384109070512.

The previous prime is 384799914713. The next prime is 384799914743. The reversal of 384799914721 is 127419997483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 127419997483 = 19 ⋅6706315657.

It can be written as a sum of positive squares in 2 ways, for example, as 127863456400 + 256936458321 = 357580^2 + 506889^2 .

It is a cyclic number.

It is not a de Polignac number, because 384799914721 - 2³ = 384799914713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384799914701) 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, 345421270 + ... + 345422383.

It is an arithmetic number, because the mean of its divisors is an integer number (96372689733).

Almost surely, 2^384799914721 is an apocalyptic number.

It is an amenable number.

384799914721 is a deficient number, since it is larger than the sum of its proper divisors (690844211).

384799914721 is an equidigital number, since it uses as much as digits as its factorization.

384799914721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690844210.

The product of its digits is 27433728, while the sum is 64.

The spelling of 384799914721 in words is "three hundred eighty-four billion, seven hundred ninety-nine million, nine hundred fourteen thousand, seven hundred twenty-one".