11958271 has 8 divisors (see below), whose sum is σ = 12956720. Its totient is φ = 11036376.

The previous prime is 11958269. The next prime is 11958283. The reversal of 11958271 is 17285911.

It is a happy number.

It is not a de Polignac number, because 11958271 - 2¹ = 11958269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11958211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525 + ... + 4918.

It is an arithmetic number, because the mean of its divisors is an integer number (1619590).

Almost surely, 2^11958271 is an apocalyptic number.

11958271 is a deficient number, since it is larger than the sum of its proper divisors (998449).

11958271 is an frugal number, since it uses more digits than its factorization.

11958271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5482 (or 5456 counting only the distinct ones).

The product of its digits is 5040, while the sum is 34.

The square root of 11958271 is about 3458.0733074936. The cubic root of 11958271 is about 228.6771637477.

The spelling of 11958271 in words is "eleven million, nine hundred fifty-eight thousand, two hundred seventy-one".