11911441 has 4 divisors (see below), whose sum is σ = 12612132. Its totient is φ = 11210752.

The previous prime is 11911439. The next prime is 11911453. The reversal of 11911441 is 14411911.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8433216 + 3478225 = 2904^2 + 1865^2 .

It is not a de Polignac number, because 11911441 - 2¹ = 11911439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11911421) 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, 350320 + ... + 350353.

It is an arithmetic number, because the mean of its divisors is an integer number (3153033).

Almost surely, 2^11911441 is an apocalyptic number.

It is an amenable number.

11911441 is a deficient number, since it is larger than the sum of its proper divisors (700691).

11911441 is an equidigital number, since it uses as much as digits as its factorization.

11911441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700690.

The product of its digits is 144, while the sum is 22.

The square root of 11911441 is about 3451.2955538464. The cubic root of 11911441 is about 228.3782643153.

The spelling of 11911441 in words is "eleven million, nine hundred eleven thousand, four hundred forty-one".