13423929 has 4 divisors (see below), whose sum is σ = 17898576. Its totient is φ = 8949284.

The previous prime is 13423909. The next prime is 13423939. The reversal of 13423929 is 92932431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13423929 - 2¹⁷ = 13292857 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13423929.

It is not an unprimeable number, because it can be changed into a prime (13423909) 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 3 ways as a sum of consecutive naturals, for example, 2237319 + ... + 2237324.

It is an arithmetic number, because the mean of its divisors is an integer number (4474644).

Almost surely, 2^13423929 is an apocalyptic number.

It is an amenable number.

13423929 is a deficient number, since it is larger than the sum of its proper divisors (4474647).

13423929 is an equidigital number, since it uses as much as digits as its factorization.

13423929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4474646.

The product of its digits is 11664, while the sum is 33.

The square root of 13423929 is about 3663.8680380167. The cubic root of 13423929 is about 237.6620736761.

The spelling of 13423929 in words is "thirteen million, four hundred twenty-three thousand, nine hundred twenty-nine".