2239605 has 24 divisors (see below), whose sum is σ = 3919032. Its totient is φ = 1183104.

The previous prime is 2239591. The next prime is 2239607. The reversal of 2239605 is 5069322.

2239605 is a `hidden beast` number, since 22 + 39 + 605 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7569 + 2232036 = 87^2 + 1494^2 .

It is not a de Polignac number, because 2239605 - 2⁶ = 2239541 is a prime.

It is a d-powerful number, because it can be written as 2¹⁰ + 2¹⁶ + 3¹³ + 9⁶ + 6⁶ + 0 + 5⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2239607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6907 + ... + 7223.

It is an arithmetic number, because the mean of its divisors is an integer number (163293).

2^2239605 is an apocalyptic number.

It is an amenable number.

2239605 is a deficient number, since it is larger than the sum of its proper divisors (1679427).

2239605 is a wasteful number, since it uses less digits than its factorization.

2239605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 2239605 is about 1496.5309886534. The cubic root of 2239605 is about 130.8349610555.

The spelling of 2239605 in words is "two million, two hundred thirty-nine thousand, six hundred five".