1197911 has 8 divisors (see below), whose sum is σ = 1407504. Its totient is φ = 1005120.

The previous prime is 1197907. The next prime is 1197923.

1197911 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1197911 - 2² = 1197907 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 (1197901) 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 7 ways as a sum of consecutive naturals, for example, 4046 + ... + 4331.

It is an arithmetic number, because the mean of its divisors is an integer number (175938).

2^1197911 is an apocalyptic number.

1197911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1197911 is a deficient number, since it is larger than the sum of its proper divisors (209593).

1197911 is a wasteful number, since it uses less digits than its factorization.

1197911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8401.

The product of its digits is 567, while the sum is 29.

The square root of 1197911 is about 1094.4912059948. The cubic root of 1197911 is about 106.2041573862.

It can be divided in two parts, 11979 and 11, that multiplied together give a square (131769 = 363²).

The spelling of 1197911 in words is "one million, one hundred ninety-seven thousand, nine hundred eleven".