11393947 has 4 divisors (see below), whose sum is σ = 11889360. Its totient is φ = 10898536.

The previous prime is 11393929. The next prime is 11393951. The reversal of 11393947 is 74939311.

11393947 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 11393947 - 2¹¹ = 11391899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11393047) 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, 247672 + ... + 247717.

It is an arithmetic number, because the mean of its divisors is an integer number (2972340).

Almost surely, 2^11393947 is an apocalyptic number.

11393947 is a deficient number, since it is larger than the sum of its proper divisors (495413).

11393947 is an equidigital number, since it uses as much as digits as its factorization.

11393947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495412.

The product of its digits is 20412, while the sum is 37.

The square root of 11393947 is about 3375.4921122704. The cubic root of 11393947 is about 225.0218711250.

The spelling of 11393947 in words is "eleven million, three hundred ninety-three thousand, nine hundred forty-seven".