11102989 has 4 divisors (see below), whose sum is σ = 11756124. Its totient is φ = 10449856.

The previous prime is 11102981. The next prime is 11103013. The reversal of 11102989 is 98920111.

11102989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98920111 = 71 ⋅1393241.

It can be written as a sum of positive squares in 2 ways, for example, as 10017225 + 1085764 = 3165^2 + 1042^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102989 - 2³ = 11102981 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11102989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102981) 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, 326542 + ... + 326575.

It is an arithmetic number, because the mean of its divisors is an integer number (2939031).

Almost surely, 2^11102989 is an apocalyptic number.

It is an amenable number.

11102989 is a deficient number, since it is larger than the sum of its proper divisors (653135).

11102989 is an equidigital number, since it uses as much as digits as its factorization.

11102989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653134.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 11102989 is about 3332.1147939409. The cubic root of 11102989 is about 223.0899313522.

The spelling of 11102989 in words is "eleven million, one hundred two thousand, nine hundred eighty-nine".