13947263 has 4 divisors (see below), whose sum is σ = 15215208. Its totient is φ = 12679320.

The previous prime is 13947247. The next prime is 13947277. The reversal of 13947263 is 36274931.

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 13947263 - 2⁴ = 13947247 is a prime.

It is a super-2 number, since 2×13947263² = 389052290382338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13947233) 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, 633956 + ... + 633977.

It is an arithmetic number, because the mean of its divisors is an integer number (3803802).

Almost surely, 2^13947263 is an apocalyptic number.

13947263 is a deficient number, since it is larger than the sum of its proper divisors (1267945).

13947263 is a wasteful number, since it uses less digits than its factorization.

13947263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267944.

The product of its digits is 27216, while the sum is 35.

The square root of 13947263 is about 3734.6034595389. The cubic root of 13947263 is about 240.7112178360.

The spelling of 13947263 in words is "thirteen million, nine hundred forty-seven thousand, two hundred sixty-three".