11100289 has 4 divisors (see below), whose sum is σ = 11114820. Its totient is φ = 11085760.

The previous prime is 11100281. The next prime is 11100293. The reversal of 11100289 is 98200111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98200111 = 73 ⋅1345207.

It can be written as a sum of positive squares in 2 ways, for example, as 6225025 + 4875264 = 2495^2 + 2208^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100289 - 2³ = 11100281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11100281) 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, 6052 + ... + 7669.

It is an arithmetic number, because the mean of its divisors is an integer number (2778705).

Almost surely, 2^11100289 is an apocalyptic number.

It is an amenable number.

11100289 is a deficient number, since it is larger than the sum of its proper divisors (14531).

11100289 is an equidigital number, since it uses as much as digits as its factorization.

11100289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14530.

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

The square root of 11100289 is about 3331.7096212005. The cubic root of 11100289 is about 223.0718463828.

The spelling of 11100289 in words is "eleven million, one hundred thousand, two hundred eighty-nine".