1187279 has 2 divisors, whose sum is σ = 1187280. Its totient is φ = 1187278.

The previous prime is 1187261. The next prime is 1187287. The reversal of 1187279 is 9727811.

It is a strong prime.

It is an emirp because it is prime and its reverse (9727811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1187279 - 2⁸ = 1187023 is a 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 (1187239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593639 + 593640.

It is an arithmetic number, because the mean of its divisors is an integer number (593640).

2^1187279 is an apocalyptic number.

1187279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187279 is an equidigital number, since it uses as much as digits as its factorization.

1187279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 35.

The square root of 1187279 is about 1089.6233294125. The cubic root of 1187279 is about 105.8890199566.

It can be divided in two parts, 11 and 87279, that multiplied together give a palindrome (960069).

The spelling of 1187279 in words is "one million, one hundred eighty-seven thousand, two hundred seventy-nine".