1191079 has 2 divisors, whose sum is σ = 1191080. Its totient is φ = 1191078.

The previous prime is 1191077. The next prime is 1191089. The reversal of 1191079 is 9701911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1191079 - 2¹ = 1191077 is a prime.

Together with 1191077, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1191077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595539 + 595540.

It is an arithmetic number, because the mean of its divisors is an integer number (595540).

2^1191079 is an apocalyptic number.

1191079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1191079 is an equidigital number, since it uses as much as digits as its factorization.

1191079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 1191079 is about 1091.3656582466. The cubic root of 1191079 is about 106.0018689596.

The spelling of 1191079 in words is "one million, one hundred ninety-one thousand, seventy-nine".