11242989 has 8 divisors (see below), whose sum is σ = 16656320. Its totient is φ = 7495308.

The previous prime is 11242963. The next prime is 11242993. The reversal of 11242989 is 98924211.

It is not a de Polignac number, because 11242989 - 2⁹ = 11242477 is a prime.

It is a super-3 number, since 3×11242989³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11242999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208177 + ... + 208230.

It is an arithmetic number, because the mean of its divisors is an integer number (2082040).

Almost surely, 2^11242989 is an apocalyptic number.

It is an amenable number.

11242989 is a deficient number, since it is larger than the sum of its proper divisors (5413331).

11242989 is an equidigital number, since it uses as much as digits as its factorization.

11242989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416416 (or 416410 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 11242989 is about 3353.0566651937. The cubic root of 11242989 is about 224.0236807979.

The spelling of 11242989 in words is "eleven million, two hundred forty-two thousand, nine hundred eighty-nine".