2239849 has 4 divisors (see below), whose sum is σ = 2249860. Its totient is φ = 2229840.

The previous prime is 2239847. The next prime is 2239883. The reversal of 2239849 is 9489322.

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 1607824 + 632025 = 1268^2 + 795^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239849 - 2¹ = 2239847 is a prime.

It is a Duffinian number.

2239849 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2239847) 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, 4662 + ... + 5119.

It is an arithmetic number, because the mean of its divisors is an integer number (562465).

2^2239849 is an apocalyptic number.

It is an amenable number.

2239849 is a deficient number, since it is larger than the sum of its proper divisors (10011).

2239849 is an equidigital number, since it uses as much as digits as its factorization.

2239849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010.

The product of its digits is 31104, while the sum is 37.

The square root of 2239849 is about 1496.6125083000. The cubic root of 2239849 is about 130.8397122759.

It can be divided in two parts, 22 and 39849, that multiplied together give a palindrome (876678).

The spelling of 2239849 in words is "two million, two hundred thirty-nine thousand, eight hundred forty-nine".