1197189 has 24 divisors (see below), whose sum is σ = 2043392. Its totient is φ = 660960.

The previous prime is 1197187. The next prime is 1197193. The reversal of 1197189 is 9817911.

It is not a de Polignac number, because 1197189 - 2¹ = 1197187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197181) 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 23 ways as a sum of consecutive naturals, for example, 1647 + ... + 2259.

2^1197189 is an apocalyptic number.

It is an amenable number.

1197189 is a deficient number, since it is larger than the sum of its proper divisors (846203).

1197189 is a wasteful number, since it uses less digits than its factorization.

1197189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 654 counting only the distinct ones).

The product of its digits is 4536, while the sum is 36.

The square root of 1197189 is about 1094.1613226577. The cubic root of 1197189 is about 106.1828161202.

The spelling of 1197189 in words is "one million, one hundred ninety-seven thousand, one hundred eighty-nine".