11851489 has 16 divisors (see below), whose sum is σ = 13208832. Its totient is φ = 10565568.

The previous prime is 11851481. The next prime is 11851493. The reversal of 11851489 is 98415811.

It is not a de Polignac number, because 11851489 - 2³ = 11851481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11851481) 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 15 ways as a sum of consecutive naturals, for example, 70884 + ... + 71050.

It is an arithmetic number, because the mean of its divisors is an integer number (825552).

Almost surely, 2^11851489 is an apocalyptic number.

It is an amenable number.

11851489 is a deficient number, since it is larger than the sum of its proper divisors (1357343).

11851489 is a wasteful number, since it uses less digits than its factorization.

11851489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336.

The product of its digits is 11520, while the sum is 37.

The square root of 11851489 is about 3442.5991634229. The cubic root of 11851489 is about 227.9944661117.

The spelling of 11851489 in words is "eleven million, eight hundred fifty-one thousand, four hundred eighty-nine".