209225743 has 2 divisors, whose sum is σ = 209225744. Its totient is φ = 209225742.

The previous prime is 209225729. The next prime is 209225759. The reversal of 209225743 is 347522902.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 209225743 - 2²⁵ = 175671311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 209225699 and 209225708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209225243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104612871 + 104612872.

It is an arithmetic number, because the mean of its divisors is an integer number (104612872).

Almost surely, 2^209225743 is an apocalyptic number.

209225743 is a deficient number, since it is larger than the sum of its proper divisors (1).

209225743 is an equidigital number, since it uses as much as digits as its factorization.

209225743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 209225743 is about 14464.6376726139. The cubic root of 209225743 is about 593.6607999259.

The spelling of 209225743 in words is "two hundred nine million, two hundred twenty-five thousand, seven hundred forty-three".