2239705 has 8 divisors (see below), whose sum is σ = 2894472. Its totient is φ = 1653888.

The previous prime is 2239703. The next prime is 2239709. The reversal of 2239705 is 5079322.

It can be written as a sum of positive squares in 4 ways, for example, as 84681 + 2155024 = 291^2 + 1468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2239705 - 2¹ = 2239703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2239703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17164 + ... + 17293.

It is an arithmetic number, because the mean of its divisors is an integer number (361809).

2^2239705 is an apocalyptic number.

It is an amenable number.

2239705 is a deficient number, since it is larger than the sum of its proper divisors (654767).

2239705 is a wasteful number, since it uses less digits than its factorization.

2239705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34475.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 2239705 is about 1496.5643988817. The cubic root of 2239705 is about 130.8369083187.

The spelling of 2239705 in words is "two million, two hundred thirty-nine thousand, seven hundred five".