1191349 has 4 divisors (see below), whose sum is σ = 1232460. Its totient is φ = 1150240.

The previous prime is 1191347. The next prime is 1191353. The reversal of 1191349 is 9431911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9431911 = 211 ⋅44701.

It can be written as a sum of positive squares in 2 ways, for example, as 562500 + 628849 = 750^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1191349 - 2¹ = 1191347 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 (1191341) 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 3 ways as a sum of consecutive naturals, for example, 20512 + ... + 20569.

It is an arithmetic number, because the mean of its divisors is an integer number (308115).

2^1191349 is an apocalyptic number.

It is an amenable number.

1191349 is a deficient number, since it is larger than the sum of its proper divisors (41111).

1191349 is an equidigital number, since it uses as much as digits as its factorization.

1191349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41110.

The product of its digits is 972, while the sum is 28.

The square root of 1191349 is about 1091.4893494670. The cubic root of 1191349 is about 106.0098780399.

It can be divided in two parts, 1191 and 349, that added together give a triangular number (1540 = T₅₅).

The spelling of 1191349 in words is "one million, one hundred ninety-one thousand, three hundred forty-nine".