1197839 has 4 divisors (see below), whose sum is σ = 1200120. Its totient is φ = 1195560.

The previous prime is 1197829. The next prime is 1197881. The reversal of 1197839 is 9387911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9387911 = 13 ⋅722147.

It is a cyclic number.

It is not a de Polignac number, because 1197839 - 2¹² = 1193743 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 (1197829) 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, 92 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (300030).

2^1197839 is an apocalyptic number.

1197839 is a deficient number, since it is larger than the sum of its proper divisors (2281).

1197839 is an equidigital number, since it uses as much as digits as its factorization.

1197839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280.

The product of its digits is 13608, while the sum is 38.

The square root of 1197839 is about 1094.4583135049. The cubic root of 1197839 is about 106.2020295563.

The spelling of 1197839 in words is "one million, one hundred ninety-seven thousand, eight hundred thirty-nine".