11905489 has 8 divisors (see below), whose sum is σ = 12128480. Its totient is φ = 11684736.

The previous prime is 11905483. The next prime is 11905499. The reversal of 11905489 is 98450911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11905489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11905483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13042 + ... + 13924.

It is an arithmetic number, because the mean of its divisors is an integer number (1516060).

Almost surely, 2^11905489 is an apocalyptic number.

It is an amenable number.

11905489 is a deficient number, since it is larger than the sum of its proper divisors (222991).

11905489 is an equidigital number, since it uses as much as digits as its factorization.

11905489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 11905489 is about 3450.4331612132. The cubic root of 11905489 is about 228.3402187113.

The spelling of 11905489 in words is "eleven million, nine hundred five thousand, four hundred eighty-nine".