2143879 has 4 divisors (see below), whose sum is σ = 2147184. Its totient is φ = 2140576.

The previous prime is 2143877. The next prime is 2143901. The reversal of 2143879 is 9783412.

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 2143879 - 2¹ = 2143877 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 (2143873) 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, 322 + ... + 2095.

It is an arithmetic number, because the mean of its divisors is an integer number (536796).

2^2143879 is an apocalyptic number.

2143879 is a deficient number, since it is larger than the sum of its proper divisors (3305).

2143879 is an equidigital number, since it uses as much as digits as its factorization.

2143879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304.

The product of its digits is 12096, while the sum is 34.

The square root of 2143879 is about 1464.1990984835. The cubic root of 2143879 is about 128.9436887410.

The spelling of 2143879 in words is "two million, one hundred forty-three thousand, eight hundred seventy-nine".