4209493 has 2 divisors, whose sum is σ = 4209494. Its totient is φ = 4209492.

The previous prime is 4209481. The next prime is 4209497. The reversal of 4209493 is 3949024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4092529 + 116964 = 2023^2 + 342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4209493 is a prime.

It is a d-powerful number, because it can be written as 4² + 2¹¹ + 0 + 9⁴ + 4¹¹ + 9⁴ + 3 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4209497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2104746 + 2104747.

It is an arithmetic number, because the mean of its divisors is an integer number (2104747).

Almost surely, 2^4209493 is an apocalyptic number.

It is an amenable number.

4209493 is a deficient number, since it is larger than the sum of its proper divisors (1).

4209493 is an equidigital number, since it uses as much as digits as its factorization.

4209493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 4209493 is about 2051.7049008081. The cubic root of 4209493 is about 161.4643308971.

The spelling of 4209493 in words is "four million, two hundred nine thousand, four hundred ninety-three".