11051989 has 16 divisors (see below), whose sum is σ = 12906432. Its totient is φ = 9370368.

The previous prime is 11051959. The next prime is 11051993. The reversal of 11051989 is 98915011.

11051989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11051989 is a prime.

It is a super-2 number, since 2×11051989² = 244292921712242, which contains 22 as substring.

It is a Duffinian number.

11051989 is a modest number, since divided by 1989 gives 1105 as remainder.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11051959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8922 + ... + 10084.

It is an arithmetic number, because the mean of its divisors is an integer number (806652).

Almost surely, 2^11051989 is an apocalyptic number.

It is an amenable number.

11051989 is a deficient number, since it is larger than the sum of its proper divisors (1854443).

11051989 is a wasteful number, since it uses less digits than its factorization.

11051989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 11051989 is about 3324.4531881198. The cubic root of 11051989 is about 222.7478297334.

The spelling of 11051989 in words is "eleven million, fifty-one thousand, nine hundred eighty-nine".