2179229 has 4 divisors (see below), whose sum is σ = 2346876. Its totient is φ = 2011584.

The previous prime is 2179223. The next prime is 2179241. The reversal of 2179229 is 9229712.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91204 + 2088025 = 302^2 + 1445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2179229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2179195 and 2179204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179223) 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, 83804 + ... + 83829.

It is an arithmetic number, because the mean of its divisors is an integer number (586719).

2^2179229 is an apocalyptic number.

It is an amenable number.

2179229 is a deficient number, since it is larger than the sum of its proper divisors (167647).

2179229 is a wasteful number, since it uses less digits than its factorization.

2179229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167646.

The product of its digits is 4536, while the sum is 32.

The square root of 2179229 is about 1476.2211893886. The cubic root of 2179229 is about 129.6485378385.

The spelling of 2179229 in words is "two million, one hundred seventy-nine thousand, two hundred twenty-nine".