14398479921 has 12 divisors (see below), whose sum is σ = 22332336432. Its totient is φ = 8227702728.

The previous prime is 14398479877. The next prime is 14398479937. The reversal of 14398479921 is 12997489341.

It is not a de Polignac number, because 14398479921 - 2²¹ = 14396382769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14398479971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48974275 + ... + 48974568.

It is an arithmetic number, because the mean of its divisors is an integer number (1861028036).

Almost surely, 2^14398479921 is an apocalyptic number.

It is an amenable number.

14398479921 is a deficient number, since it is larger than the sum of its proper divisors (7933856511).

14398479921 is an equidigital number, since it uses as much as digits as its factorization.

14398479921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97948860 (or 97948853 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 57.

The spelling of 14398479921 in words is "fourteen billion, three hundred ninety-eight million, four hundred seventy-nine thousand, nine hundred twenty-one".