1189388 has 12 divisors (see below), whose sum is σ = 2203992. Its totient is φ = 559680.

The previous prime is 1189387. The next prime is 1189403. The reversal of 1189388 is 8839811.

It is not an unprimeable number, because it can be changed into a prime (1189387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8678 + ... + 8813.

It is an arithmetic number, because the mean of its divisors is an integer number (183666).

2^1189388 is an apocalyptic number.

It is an amenable number.

1189388 is a deficient number, since it is larger than the sum of its proper divisors (1014604).

1189388 is a wasteful number, since it uses less digits than its factorization.

1189388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17512 (or 17510 counting only the distinct ones).

The product of its digits is 13824, while the sum is 38.

The square root of 1189388 is about 1090.5906656487. The cubic root of 1189388 is about 105.9516808373.

The spelling of 1189388 in words is "one million, one hundred eighty-nine thousand, three hundred eighty-eight".