1117271879 has 4 divisors (see below), whose sum is σ = 1117479840. Its totient is φ = 1117063920.

The previous prime is 1117271873. The next prime is 1117271923. The reversal of 1117271879 is 9781727111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1117271879 - 2¹² = 1117267783 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 (1117271873) 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, 95702 + ... + 106739.

It is an arithmetic number, because the mean of its divisors is an integer number (279369960).

Almost surely, 2^1117271879 is an apocalyptic number.

1117271879 is a deficient number, since it is larger than the sum of its proper divisors (207961).

1117271879 is an equidigital number, since it uses as much as digits as its factorization.

1117271879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207960.

The product of its digits is 49392, while the sum is 44.

The square root of 1117271879 is about 33425.6171072428. The cubic root of 1117271879 is about 1037.6549352784.

The spelling of 1117271879 in words is "one billion, one hundred seventeen million, two hundred seventy-one thousand, eight hundred seventy-nine".