1189271 has 2 divisors, whose sum is σ = 1189272. Its totient is φ = 1189270.

The previous prime is 1189231. The next prime is 1189277. The reversal of 1189271 is 1729811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1189271 - 2¹⁰ = 1188247 is a prime.

It is a super-2 number, since 2×1189271² = 2828731022882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1189277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594635 + 594636.

It is an arithmetic number, because the mean of its divisors is an integer number (594636).

2^1189271 is an apocalyptic number.

1189271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189271 is an equidigital number, since it uses as much as digits as its factorization.

1189271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 29.

The square root of 1189271 is about 1090.5370236723. The cubic root of 1189271 is about 105.9482065707.

The spelling of 1189271 in words is "one million, one hundred eighty-nine thousand, two hundred seventy-one".