109279 has 2 divisors, whose sum is σ = 109280. Its totient is φ = 109278.

The previous prime is 109267. The next prime is 109297. The reversal of 109279 is 972901.

Together with next prime (109297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (972901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109279 - 2¹⁵ = 76511 is a prime.

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 109279 parts by 467 straight cuts.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54639 + 54640.

It is an arithmetic number, because the mean of its divisors is an integer number (54640).

2¹⁰⁹²⁷⁹ is an apocalyptic number.

109279 is a deficient number, since it is larger than the sum of its proper divisors (1).

109279 is an equidigital number, since it uses as much as digits as its factorization.

109279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 109279 is about 330.5737436640. The cubic root of 109279 is about 47.8092837485.

It can be divided in two parts, 1092 and 79, that multiplied together give a palindrome (86268).

The spelling of 109279 in words is "one hundred nine thousand, two hundred seventy-nine".