13953321 has 24 divisors (see below), whose sum is σ = 21033480. Its totient is φ = 8902656.

The previous prime is 13953319. The next prime is 13953337. The reversal of 13953321 is 12335931.

It is a happy number.

13953321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 114921 + 13838400 = 339^2 + 3720^2 .

It is not a de Polignac number, because 13953321 - 2¹ = 13953319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13953361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50235 + ... + 50511.

It is an arithmetic number, because the mean of its divisors is an integer number (876395).

Almost surely, 2^13953321 is an apocalyptic number.

It is an amenable number.

13953321 is a deficient number, since it is larger than the sum of its proper divisors (7080159).

13953321 is a wasteful number, since it uses less digits than its factorization.

13953321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 502 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 13953321 is about 3735.4144348385. The cubic root of 13953321 is about 240.7460638002.

The spelling of 13953321 in words is "thirteen million, nine hundred fifty-three thousand, three hundred twenty-one".