11109641 has 4 divisors (see below), whose sum is σ = 11298000. Its totient is φ = 10921284.

The previous prime is 11109629. The next prime is 11109643. The reversal of 11109641 is 14690111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14690111 = 331 ⋅44381.

It is a cyclic number.

It is not a de Polignac number, because 11109641 - 2⁶ = 11109577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11109643) 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, 94091 + ... + 94208.

It is an arithmetic number, because the mean of its divisors is an integer number (2824500).

Almost surely, 2^11109641 is an apocalyptic number.

It is an amenable number.

11109641 is a deficient number, since it is larger than the sum of its proper divisors (188359).

11109641 is an equidigital number, since it uses as much as digits as its factorization.

11109641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188358.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 11109641 is about 3333.1128093720. The cubic root of 11109641 is about 223.1344748518.

Adding to 11109641 its reverse (14690111), we get a palindrome (25799752).

The spelling of 11109641 in words is "eleven million, one hundred nine thousand, six hundred forty-one".