1197139 has 4 divisors (see below), whose sum is σ = 1210680. Its totient is φ = 1183600.

The previous prime is 1197121. The next prime is 1197167. The reversal of 1197139 is 9317911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1197139 - 2⁵ = 1197107 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1197139.

It is not an unprimeable number, because it can be changed into a prime (1197199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6637 + ... + 6814.

It is an arithmetic number, because the mean of its divisors is an integer number (302670).

2^1197139 is an apocalyptic number.

1197139 is a deficient number, since it is larger than the sum of its proper divisors (13541).

1197139 is an equidigital number, since it uses as much as digits as its factorization.

1197139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13540.

The product of its digits is 1701, while the sum is 31.

The square root of 1197139 is about 1094.1384738688. The cubic root of 1197139 is about 106.1813378755.

The spelling of 1197139 in words is "one million, one hundred ninety-seven thousand, one hundred thirty-nine".