1178939 has 2 divisors, whose sum is σ = 1178940. Its totient is φ = 1178938.

The previous prime is 1178927. The next prime is 1178953. The reversal of 1178939 is 9398711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1178939 - 2¹⁶ = 1113403 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1178909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589469 + 589470.

It is an arithmetic number, because the mean of its divisors is an integer number (589470).

2^1178939 is an apocalyptic number.

1178939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1178939 is an equidigital number, since it uses as much as digits as its factorization.

1178939 is an evil number, because the sum of its binary digits is even.

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

The square root of 1178939 is about 1085.7895744572. The cubic root of 1178939 is about 105.6404992253.

The spelling of 1178939 in words is "one million, one hundred seventy-eight thousand, nine hundred thirty-nine".