11423947 has 4 divisors (see below), whose sum is σ = 11436040. Its totient is φ = 11411856.

The previous prime is 11423933. The next prime is 11423977. The reversal of 11423947 is 74932411.

11423947 is digitally balanced in base 2, 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 a de Polignac number, because none of the positive numbers 2^k-11423947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11423977) 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, 4497 + ... + 6562.

It is an arithmetic number, because the mean of its divisors is an integer number (2859010).

Almost surely, 2^11423947 is an apocalyptic number.

11423947 is a deficient number, since it is larger than the sum of its proper divisors (12093).

11423947 is a wasteful number, since it uses less digits than its factorization.

11423947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12092.

The product of its digits is 6048, while the sum is 31.

The square root of 11423947 is about 3379.9329875014. The cubic root of 11423947 is about 225.2191905149.

The spelling of 11423947 in words is "eleven million, four hundred twenty-three thousand, nine hundred forty-seven".