2247209 has 2 divisors, whose sum is σ = 2247210. Its totient is φ = 2247208.

The previous prime is 2247173. The next prime is 2247227. The reversal of 2247209 is 9027422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1651225 + 595984 = 1285^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 2247209 - 2⁸ = 2246953 is a prime.

It is not a weakly prime, because it can be changed into another prime (2247229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1123604 + 1123605.

It is an arithmetic number, because the mean of its divisors is an integer number (1123605).

2^2247209 is an apocalyptic number.

It is an amenable number.

2247209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2247209 is an equidigital number, since it uses as much as digits as its factorization.

2247209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2247209 is about 1499.0693779809. The cubic root of 2247209 is about 130.9828658903.

The spelling of 2247209 in words is "two million, two hundred forty-seven thousand, two hundred nine".