11747971 has 2 divisors, whose sum is σ = 11747972. Its totient is φ = 11747970.

The previous prime is 11747959. The next prime is 11748031. The reversal of 11747971 is 17974711.

11747971 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11747971 - 2⁷ = 11747843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11747971.

It is not a weakly prime, because it can be changed into another prime (11747921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5873985 + 5873986.

It is an arithmetic number, because the mean of its divisors is an integer number (5873986).

Almost surely, 2^11747971 is an apocalyptic number.

11747971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11747971 is an equidigital number, since it uses as much as digits as its factorization.

11747971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12348, while the sum is 37.

The square root of 11747971 is about 3427.5313273550. The cubic root of 11747971 is about 227.3287105772.

The spelling of 11747971 in words is "eleven million, seven hundred forty-seven thousand, nine hundred seventy-one".