14479069921 has 4 divisors (see below), whose sum is σ = 14485062852. Its totient is φ = 14473076992.

The previous prime is 14479069903. The next prime is 14479069933. The reversal of 14479069921 is 12996097441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12996097441 = 419 ⋅31016939.

It can be written as a sum of positive squares in 2 ways, for example, as 14326893025 + 152176896 = 119695^2 + 12336^2 .

It is a cyclic number.

It is not a de Polignac number, because 14479069921 - 2¹⁷ = 14478938849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14479069421) 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, 2992840 + ... + 2997673.

It is an arithmetic number, because the mean of its divisors is an integer number (3621265713).

Almost surely, 2^14479069921 is an apocalyptic number.

It is an amenable number.

14479069921 is a deficient number, since it is larger than the sum of its proper divisors (5992931).

14479069921 is an equidigital number, since it uses as much as digits as its factorization.

14479069921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5992930.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 14479069921 in words is "fourteen billion, four hundred seventy-nine million, sixty-nine thousand, nine hundred twenty-one".