11091969 has 12 divisors (see below), whose sum is σ = 18310656. Its totient is φ = 6338232.

The previous prime is 11091959. The next prime is 11092001. The reversal of 11091969 is 96919011.

It is not a de Polignac number, because 11091969 - 2¹² = 11087873 is a prime.

It is a super-2 number, since 2×11091969² = 246063552593922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11091919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87969 + ... + 88094.

It is an arithmetic number, because the mean of its divisors is an integer number (1525888).

It is a Proth number, since it is equal to 677 ⋅ 2¹⁴ + 1 and 677 < 2¹⁴.

Almost surely, 2^11091969 is an apocalyptic number.

It is an amenable number.

11091969 is a deficient number, since it is larger than the sum of its proper divisors (7218687).

11091969 is a wasteful number, since it uses less digits than its factorization.

11091969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176076 (or 176073 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 36.

The square root of 11091969 is about 3330.4607789313. The cubic root of 11091969 is about 223.0160994363.

The spelling of 11091969 in words is "eleven million, ninety-one thousand, nine hundred sixty-nine".