13949647 has 4 divisors (see below), whose sum is σ = 14246496. Its totient is φ = 13652800.

The previous prime is 13949633. The next prime is 13949651. The reversal of 13949647 is 74694931.

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 13949647 - 2⁷ = 13949519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13949657) 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, 148354 + ... + 148447.

It is an arithmetic number, because the mean of its divisors is an integer number (3561624).

Almost surely, 2^13949647 is an apocalyptic number.

13949647 is a deficient number, since it is larger than the sum of its proper divisors (296849).

13949647 is an equidigital number, since it uses as much as digits as its factorization.

13949647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296848.

The product of its digits is 163296, while the sum is 43.

The square root of 13949647 is about 3734.9226230271. The cubic root of 13949647 is about 240.7249319449.

The spelling of 13949647 in words is "thirteen million, nine hundred forty-nine thousand, six hundred forty-seven".