1148889 has 8 divisors (see below), whose sum is σ = 1750720. Its totient is φ = 656496.

The previous prime is 1148879. The next prime is 1148921. The reversal of 1148889 is 9888411.

It is a happy number.

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

It is not a de Polignac number, because 1148889 - 2⁵ = 1148857 is a prime.

It is a Duffinian number.

1148889 is a lucky number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1148839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27334 + ... + 27375.

It is an arithmetic number, because the mean of its divisors is an integer number (218840).

2^1148889 is an apocalyptic number.

It is an amenable number.

1148889 is a deficient number, since it is larger than the sum of its proper divisors (601831).

1148889 is an equidigital number, since it uses as much as digits as its factorization.

1148889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54719.

The product of its digits is 18432, while the sum is 39.

The square root of 1148889 is about 1071.8623978851. The cubic root of 1148889 is about 104.7352058061.

The spelling of 1148889 in words is "one million, one hundred forty-eight thousand, eight hundred eighty-nine".