100279 has 2 divisors, whose sum is σ = 100280. Its totient is φ = 100278.

The previous prime is 100271. The next prime is 100291. The reversal of 100279 is 972001.

It is a weak prime.

It is an emirp because it is prime and its reverse (972001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100279 - 2³ = 100271 is a prime.

It is a Chen prime.

It is the 24-th primeval number, because it sets a new record (122) in the number of distinct primes that is it possible to write using its digits.

It is equal to p₉₆₁₃ and since 100279 and 9613 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50139 + 50140.

It is an arithmetic number, because the mean of its divisors is an integer number (50140).

2¹⁰⁰²⁷⁹ is an apocalyptic number.

100279 is a deficient number, since it is larger than the sum of its proper divisors (1).

100279 is an equidigital number, since it uses as much as digits as its factorization.

100279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 100279 is about 316.6685964853. The cubic root of 100279 is about 46.4590150293.

It can be divided in two parts, 1002 and 79, that added together give a triangular number (1081 = T₄₆).

The spelling of 100279 in words is "one hundred thousand, two hundred seventy-nine".