1187339 has 2 divisors, whose sum is σ = 1187340. Its totient is φ = 1187338.

The previous prime is 1187321. The next prime is 1187341. The reversal of 1187339 is 9337811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1187339 - 2²⁰ = 138763 is a prime.

Together with 1187341, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1187309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593669 + 593670.

It is an arithmetic number, because the mean of its divisors is an integer number (593670).

2^1187339 is an apocalyptic number.

1187339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187339 is an equidigital number, since it uses as much as digits as its factorization.

1187339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 1187339 is about 1089.6508615148. The cubic root of 1187339 is about 105.8908036526.

The spelling of 1187339 in words is "one million, one hundred eighty-seven thousand, three hundred thirty-nine".