2179239 has 4 divisors (see below), whose sum is σ = 2905656. Its totient is φ = 1452824.

The previous prime is 2179223. The next prime is 2179241. The reversal of 2179239 is 9329712.

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 2179239 - 2⁴ = 2179223 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179279) 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, 363204 + ... + 363209.

It is an arithmetic number, because the mean of its divisors is an integer number (726414).

2^2179239 is an apocalyptic number.

2179239 is a deficient number, since it is larger than the sum of its proper divisors (726417).

2179239 is an equidigital number, since it uses as much as digits as its factorization.

2179239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726416.

The product of its digits is 6804, while the sum is 33.

The square root of 2179239 is about 1476.2245764111. The cubic root of 2179239 is about 129.6487361477.

The spelling of 2179239 in words is "two million, one hundred seventy-nine thousand, two hundred thirty-nine".