11947371 has 16 divisors (see below), whose sum is σ = 16857600. Its totient is φ = 7505568.

The previous prime is 11947367. The next prime is 11947387. The reversal of 11947371 is 17374911.

It is not a de Polignac number, because 11947371 - 2² = 11947367 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11947321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13185 + ... + 14061.

It is an arithmetic number, because the mean of its divisors is an integer number (1053600).

Almost surely, 2^11947371 is an apocalyptic number.

11947371 is a deficient number, since it is larger than the sum of its proper divisors (4910229).

11947371 is a wasteful number, since it uses less digits than its factorization.

11947371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138.

The product of its digits is 5292, while the sum is 33.

The square root of 11947371 is about 3456.4969260799. The cubic root of 11947371 is about 228.6076626523.

The spelling of 11947371 in words is "eleven million, nine hundred forty-seven thousand, three hundred seventy-one".