2239745 has 8 divisors (see below), whose sum is σ = 2702400. Its totient is φ = 1782000.

The previous prime is 2239723. The next prime is 2239747. The reversal of 2239745 is 5479322.

It is a happy number.

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

It is not a de Polignac number, because 2239745 - 2¹⁰ = 2238721 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2239747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (337800).

2^2239745 is an apocalyptic number.

It is an amenable number.

2239745 is a deficient number, since it is larger than the sum of its proper divisors (462655).

2239745 is a wasteful number, since it uses less digits than its factorization.

2239745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455.

The product of its digits is 15120, while the sum is 32.

The square root of 2239745 is about 1496.5777627641. The cubic root of 2239745 is about 130.8376872078.

The spelling of 2239745 in words is "two million, two hundred thirty-nine thousand, seven hundred forty-five".