11739947 has 4 divisors (see below), whose sum is σ = 11756136. Its totient is φ = 11723760.

The previous prime is 11739907. The next prime is 11739971. The reversal of 11739947 is 74993711.

11739947 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, and also an emirpimes, since its reverse is a distinct semiprime: 74993711 = 13 ⋅5768747.

It is a cyclic number.

It is not a de Polignac number, because 11739947 - 2⁶ = 11739883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11739907) 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, 6953 + ... + 8474.

It is an arithmetic number, because the mean of its divisors is an integer number (2939034).

Almost surely, 2^11739947 is an apocalyptic number.

11739947 is a deficient number, since it is larger than the sum of its proper divisors (16189).

11739947 is an equidigital number, since it uses as much as digits as its factorization.

11739947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16188.

The product of its digits is 47628, while the sum is 41.

The square root of 11739947 is about 3426.3606056573. The cubic root of 11739947 is about 227.2769427436.

The spelling of 11739947 in words is "eleven million, seven hundred thirty-nine thousand, nine hundred forty-seven".