2109279 has 16 divisors (see below), whose sum is σ = 2927232. Its totient is φ = 1350048.

The previous prime is 2109277. The next prime is 2109287. The reversal of 2109279 is 9729012.

It is not a de Polignac number, because 2109279 - 2¹ = 2109277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10609 + ... + 10805.

It is an arithmetic number, because the mean of its divisors is an integer number (182952).

2^2109279 is an apocalyptic number.

2109279 is a deficient number, since it is larger than the sum of its proper divisors (817953).

2109279 is a wasteful number, since it uses less digits than its factorization.

2109279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 2109279 is about 1452.3357049939. The cubic root of 2109279 is about 128.2462503986.

The spelling of 2109279 in words is "two million, one hundred nine thousand, two hundred seventy-nine".