13929547 has 2 divisors, whose sum is σ = 13929548. Its totient is φ = 13929546.

The previous prime is 13929529. The next prime is 13929551. The reversal of 13929547 is 74592931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13929547 - 2²³ = 5540939 is a prime.

It is not a weakly prime, because it can be changed into another prime (13929577) 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 as a sum of consecutive naturals, namely, 6964773 + 6964774.

It is an arithmetic number, because the mean of its divisors is an integer number (6964774).

Almost surely, 2^13929547 is an apocalyptic number.

13929547 is a deficient number, since it is larger than the sum of its proper divisors (1).

13929547 is an equidigital number, since it uses as much as digits as its factorization.

13929547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 13929547 is about 3732.2308342331. The cubic root of 13929547 is about 240.6092564501.

The spelling of 13929547 in words is "thirteen million, nine hundred twenty-nine thousand, five hundred forty-seven".