11439271 has 4 divisors (see below), whose sum is σ = 11529472. Its totient is φ = 11349072.

The previous prime is 11439251. The next prime is 11439277. The reversal of 11439271 is 17293411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11439271 - 2⁹ = 11438759 is a prime.

It is a super-2 number, since 2×11439271² = 261713842022882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11439277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44910 + ... + 45163.

It is an arithmetic number, because the mean of its divisors is an integer number (2882368).

Almost surely, 2^11439271 is an apocalyptic number.

11439271 is a deficient number, since it is larger than the sum of its proper divisors (90201).

11439271 is an equidigital number, since it uses as much as digits as its factorization.

11439271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90200.

The product of its digits is 1512, while the sum is 28.

The square root of 11439271 is about 3382.1991366565. The cubic root of 11439271 is about 225.3198479864.

The spelling of 11439271 in words is "eleven million, four hundred thirty-nine thousand, two hundred seventy-one".