1171399 has 2 divisors, whose sum is σ = 1171400. Its totient is φ = 1171398.

The previous prime is 1171393. The next prime is 1171421. The reversal of 1171399 is 9931711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1171399 - 2¹³ = 1163207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1171399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1171393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585699 + 585700.

It is an arithmetic number, because the mean of its divisors is an integer number (585700).

2^1171399 is an apocalyptic number.

1171399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171399 is an equidigital number, since it uses as much as digits as its factorization.

1171399 is an evil number, because the sum of its binary digits is even.

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

The square root of 1171399 is about 1082.3118774180. The cubic root of 1171399 is about 105.4148066003.

The spelling of 1171399 in words is "one million, one hundred seventy-one thousand, three hundred ninety-nine".