1172879 has 4 divisors (see below), whose sum is σ = 1177176. Its totient is φ = 1168584.

The previous prime is 1172867. The next prime is 1172893. The reversal of 1172879 is 9782711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9782711 = 757 ⋅12923.

It is a cyclic number.

It is not a de Polignac number, because 1172879 - 2²⁰ = 124303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709 + ... + 2294.

It is an arithmetic number, because the mean of its divisors is an integer number (294294).

2^1172879 is an apocalyptic number.

1172879 is a deficient number, since it is larger than the sum of its proper divisors (4297).

1172879 is an equidigital number, since it uses as much as digits as its factorization.

1172879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296.

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

The square root of 1172879 is about 1082.9953831850. The cubic root of 1172879 is about 105.4591832402.

The spelling of 1172879 in words is "one million, one hundred seventy-two thousand, eight hundred seventy-nine".