11489281 has 4 divisors (see below), whose sum is σ = 12094000. Its totient is φ = 10884564.

The previous prime is 11489279. The next prime is 11489293. The reversal of 11489281 is 18298411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11489281 - 2¹ = 11489279 is a prime.

It is a super-2 number, since 2×11489281² = 264007155793922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11489221) 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, 302331 + ... + 302368.

It is an arithmetic number, because the mean of its divisors is an integer number (3023500).

It is a Proth number, since it is equal to 2805 ⋅ 2¹² + 1 and 2805 < 2¹².

Almost surely, 2^11489281 is an apocalyptic number.

It is an amenable number.

11489281 is a deficient number, since it is larger than the sum of its proper divisors (604719).

11489281 is an equidigital number, since it uses as much as digits as its factorization.

11489281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604718.

The product of its digits is 4608, while the sum is 34.

The square root of 11489281 is about 3389.5841927883. The cubic root of 11489281 is about 225.6477204121.

The spelling of 11489281 in words is "eleven million, four hundred eighty-nine thousand, two hundred eighty-one".