2209741 has 2 divisors, whose sum is σ = 2209742. Its totient is φ = 2209740.

The previous prime is 2209721. The next prime is 2209747. The reversal of 2209741 is 1479022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2160900 + 48841 = 1470^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209741 - 2²¹ = 112589 is a prime.

It is equal to p₁₆₃₃₃₉ and since 2209741 and 163339 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2209747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104870 + 1104871.

It is an arithmetic number, because the mean of its divisors is an integer number (1104871).

2^2209741 is an apocalyptic number.

It is an amenable number.

2209741 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209741 is an equidigital number, since it uses as much as digits as its factorization.

2209741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2209741 is about 1486.5197610526. The cubic root of 2209741 is about 130.2508175452.

The spelling of 2209741 in words is "two million, two hundred nine thousand, seven hundred forty-one".