13980221 has 8 divisors (see below), whose sum is σ = 14393400. Its totient is φ = 13570560.

The previous prime is 13980193. The next prime is 13980269. The reversal of 13980221 is 12208931.

It can be written as a sum of positive squares in 4 ways, for example, as 657721 + 13322500 = 811^2 + 3650^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13980221 - 2¹⁰ = 13979197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13980821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8645 + ... + 10133.

It is an arithmetic number, because the mean of its divisors is an integer number (1799175).

Almost surely, 2^13980221 is an apocalyptic number.

It is an amenable number.

13980221 is a deficient number, since it is larger than the sum of its proper divisors (413179).

13980221 is a wasteful number, since it uses less digits than its factorization.

13980221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 13980221 is about 3739.0133725356. The cubic root of 13980221 is about 240.9006724396.

The spelling of 13980221 in words is "thirteen million, nine hundred eighty thousand, two hundred twenty-one".