1189791 has 6 divisors (see below), whose sum is σ = 1718600. Its totient is φ = 793188.

The previous prime is 1189789. The next prime is 1189801. The reversal of 1189791 is 1979811.

It is not a de Polignac number, because 1189791 - 2¹ = 1189789 is a prime.

It is a Duffinian number.

1189791 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66091 + ... + 66108.

2^1189791 is an apocalyptic number.

1189791 is a deficient number, since it is larger than the sum of its proper divisors (528809).

1189791 is a wasteful number, since it uses less digits than its factorization.

1189791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132205 (or 132202 counting only the distinct ones).

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

The square root of 1189791 is about 1090.7754122641. The cubic root of 1189791 is about 105.9636460121.

The spelling of 1189791 in words is "one million, one hundred eighty-nine thousand, seven hundred ninety-one".