2212739 has 4 divisors (see below), whose sum is σ = 2218440. Its totient is φ = 2207040.

The previous prime is 2212723. The next prime is 2212747. The reversal of 2212739 is 9372122.

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 2212739 - 2⁴ = 2212723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212709) 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, 2222 + ... + 3059.

It is an arithmetic number, because the mean of its divisors is an integer number (554610).

2^2212739 is an apocalyptic number.

2212739 is a deficient number, since it is larger than the sum of its proper divisors (5701).

2212739 is an equidigital number, since it uses as much as digits as its factorization.

2212739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700.

The product of its digits is 1512, while the sum is 26.

The square root of 2212739 is about 1487.5278148660. The cubic root of 2212739 is about 130.3096955596.

The spelling of 2212739 in words is "two million, two hundred twelve thousand, seven hundred thirty-nine".