13906847 has 4 divisors (see below), whose sum is σ = 13925976. Its totient is φ = 13887720.

The previous prime is 13906843. The next prime is 13906859. The reversal of 13906847 is 74860931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13906847 - 2² = 13906843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13906847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13906843) 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, 8429 + ... + 9942.

It is an arithmetic number, because the mean of its divisors is an integer number (3481494).

Almost surely, 2^13906847 is an apocalyptic number.

13906847 is a deficient number, since it is larger than the sum of its proper divisors (19129).

13906847 is an equidigital number, since it uses as much as digits as its factorization.

13906847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19128.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13906847 is about 3729.1885176269. The cubic root of 13906847 is about 240.4784840776.

The spelling of 13906847 in words is "thirteen million, nine hundred six thousand, eight hundred forty-seven".