13958947 has 4 divisors (see below), whose sum is σ = 14440320. Its totient is φ = 13477576.

The previous prime is 13958941. The next prime is 13958969. The reversal of 13958947 is 74985931.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-13958947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13958897 and 13958906.

It is not an unprimeable number, because it can be changed into a prime (13958941) 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, 240643 + ... + 240700.

It is an arithmetic number, because the mean of its divisors is an integer number (3610080).

Almost surely, 2^13958947 is an apocalyptic number.

13958947 is a deficient number, since it is larger than the sum of its proper divisors (481373).

13958947 is an equidigital number, since it uses as much as digits as its factorization.

13958947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481372.

The product of its digits is 272160, while the sum is 46.

The square root of 13958947 is about 3736.1674213022. The cubic root of 13958947 is about 240.7784158440.

The spelling of 13958947 in words is "thirteen million, nine hundred fifty-eight thousand, nine hundred forty-seven".