2147879 has 4 divisors (see below), whose sum is σ = 2177376. Its totient is φ = 2118384.

The previous prime is 2147869. The next prime is 2147881. The reversal of 2147879 is 9787412.

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 2147879 - 2⁴ = 2147863 is a prime.

It is a super-2 number, since 2×2147879² = 9226768397282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147839) 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, 14639 + ... + 14784.

It is an arithmetic number, because the mean of its divisors is an integer number (544344).

2^2147879 is an apocalyptic number.

2147879 is a deficient number, since it is larger than the sum of its proper divisors (29497).

2147879 is an equidigital number, since it uses as much as digits as its factorization.

2147879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29496.

The product of its digits is 28224, while the sum is 38.

The square root of 2147879 is about 1465.5643964016. The cubic root of 2147879 is about 129.0238323053.

The spelling of 2147879 in words is "two million, one hundred forty-seven thousand, eight hundred seventy-nine".