13909629 has 4 divisors (see below), whose sum is σ = 18546176. Its totient is φ = 9273084.

The previous prime is 13909627. The next prime is 13909631. The reversal of 13909629 is 92690931.

It is a happy number.

13909629 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (13909627) and next prime (13909631).

It is not a de Polignac number, because 13909629 - 2¹ = 13909627 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 (13909627) 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, 2318269 + ... + 2318274.

It is an arithmetic number, because the mean of its divisors is an integer number (4636544).

Almost surely, 2^13909629 is an apocalyptic number.

It is an amenable number.

13909629 is a deficient number, since it is larger than the sum of its proper divisors (4636547).

13909629 is an equidigital number, since it uses as much as digits as its factorization.

13909629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636546.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 13909629 is about 3729.5615023753. The cubic root of 13909629 is about 240.4945185421.

The spelling of 13909629 in words is "thirteen million, nine hundred nine thousand, six hundred twenty-nine".