13220929 has 8 divisors (see below), whose sum is σ = 13833792. Its totient is φ = 12611280.

The previous prime is 13220899. The next prime is 13220947. The reversal of 13220929 is 92902231.

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 13220929 - 2¹⁹ = 12696641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13220897 and 13220906.

It is not an unprimeable number, because it can be changed into a prime (13220989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12439 + ... + 13459.

It is an arithmetic number, because the mean of its divisors is an integer number (1729224).

Almost surely, 2^13220929 is an apocalyptic number.

It is an amenable number.

13220929 is a deficient number, since it is larger than the sum of its proper divisors (612863).

13220929 is a wasteful number, since it uses less digits than its factorization.

13220929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 13220929 is about 3636.0595429668. The cubic root of 13220929 is about 236.4579885953.

The spelling of 13220929 in words is "thirteen million, two hundred twenty thousand, nine hundred twenty-nine".