13930947 has 12 divisors (see below), whose sum is σ = 20868120. Its totient is φ = 9287136.

The previous prime is 13930927. The next prime is 13930957. The reversal of 13930947 is 74903931.

It is not a de Polignac number, because 13930947 - 2⁶ = 13930883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13930927) 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 11 ways as a sum of consecutive naturals, for example, 28422 + ... + 28907.

It is an arithmetic number, because the mean of its divisors is an integer number (1739010).

Almost surely, 2^13930947 is an apocalyptic number.

13930947 is a deficient number, since it is larger than the sum of its proper divisors (6937173).

13930947 is an frugal number, since it uses more digits than its factorization.

13930947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57344 (or 57332 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 13930947 is about 3732.4183849081. The cubic root of 13930947 is about 240.6173170538.

The spelling of 13930947 in words is "thirteen million, nine hundred thirty thousand, nine hundred forty-seven".