13929643 has 8 divisors (see below), whose sum is σ = 17144288. Its totient is φ = 11021184.

The previous prime is 13929631. The next prime is 13929659. The reversal of 13929643 is 34692931.

13929643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13929643 - 2⁵ = 13929611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13921643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76446 + ... + 76627.

It is an arithmetic number, because the mean of its divisors is an integer number (2143036).

Almost surely, 2^13929643 is an apocalyptic number.

13929643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13929643 is a deficient number, since it is larger than the sum of its proper divisors (3214645).

13929643 is a wasteful number, since it uses less digits than its factorization.

13929643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153093.

The product of its digits is 34992, while the sum is 37.

The square root of 13929643 is about 3732.2436951518. The cubic root of 13929643 is about 240.6098091945.

The spelling of 13929643 in words is "thirteen million, nine hundred twenty-nine thousand, six hundred forty-three".