13906947 has 4 divisors (see below), whose sum is σ = 18542600. Its totient is φ = 9271296.

The previous prime is 13906943. The next prime is 13906999. The reversal of 13906947 is 74960931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74960931 = 3 ⋅24986977.

It is not a de Polignac number, because 13906947 - 2² = 13906943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13906943) 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, 2317822 + ... + 2317827.

It is an arithmetic number, because the mean of its divisors is an integer number (4635650).

Almost surely, 2^13906947 is an apocalyptic number.

13906947 is a deficient number, since it is larger than the sum of its proper divisors (4635653).

13906947 is an equidigital number, since it uses as much as digits as its factorization.

13906947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635652.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 13906947 is about 3729.2019253454. The cubic root of 13906947 is about 240.4790604793.

The spelling of 13906947 in words is "thirteen million, nine hundred six thousand, nine hundred forty-seven".