2239961 has 2 divisors, whose sum is σ = 2239962. Its totient is φ = 2239960.

The previous prime is 2239957. The next prime is 2239987. The reversal of 2239961 is 1699322.

2239961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1308736 + 931225 = 1144^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239961 - 2² = 2239957 is a prime.

It is not a weakly prime, because it can be changed into another prime (2239361) 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, 1119980 + 1119981.

It is an arithmetic number, because the mean of its divisors is an integer number (1119981).

2^2239961 is an apocalyptic number.

It is an amenable number.

2239961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239961 is an equidigital number, since it uses as much as digits as its factorization.

2239961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 2239961 is about 1496.6499256673. The cubic root of 2239961 is about 130.8418930485.

The spelling of 2239961 in words is "two million, two hundred thirty-nine thousand, nine hundred sixty-one".