2239949 has 2 divisors, whose sum is σ = 2239950. Its totient is φ = 2239948.

The previous prime is 2239933. The next prime is 2239957. The reversal of 2239949 is 9499322.

2239949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1249924 + 990025 = 1118^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239949 - 2⁴ = 2239933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2239049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119974 + 1119975.

It is an arithmetic number, because the mean of its divisors is an integer number (1119975).

2^2239949 is an apocalyptic number.

It is an amenable number.

2239949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239949 is an equidigital number, since it uses as much as digits as its factorization.

2239949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 38.

The square root of 2239949 is about 1496.6459167084. The cubic root of 2239949 is about 130.8416593977.

It can be divided in two parts, 22 and 39949, that multiplied together give a palindrome (878878).

The spelling of 2239949 in words is "two million, two hundred thirty-nine thousand, nine hundred forty-nine".