4238657 has 2 divisors, whose sum is σ = 4238658. Its totient is φ = 4238656.

The previous prime is 4238651. The next prime is 4238687. The reversal of 4238657 is 7568324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3964081 + 274576 = 1991^2 + 524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4238657 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2¹³ + 3 + 8⁵ + 6³ + 5⁵ + 7² .

It is not a weakly prime, because it can be changed into another prime (4238651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2119328 + 2119329.

It is an arithmetic number, because the mean of its divisors is an integer number (2119329).

Almost surely, 2^4238657 is an apocalyptic number.

It is an amenable number.

4238657 is a deficient number, since it is larger than the sum of its proper divisors (1).

4238657 is an equidigital number, since it uses as much as digits as its factorization.

4238657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 4238657 is about 2058.7998931416. The cubic root of 4238657 is about 161.8363561148.

The spelling of 4238657 in words is "four million, two hundred thirty-eight thousand, six hundred fifty-seven".