4138817 has 2 divisors, whose sum is σ = 4138818. Its totient is φ = 4138816.

The previous prime is 4138807. The next prime is 4138819. The reversal of 4138817 is 7188314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2660161 + 1478656 = 1631^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 4138817 - 2⁶ = 4138753 is a prime.

Together with 4138819, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4138819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069408 + 2069409.

It is an arithmetic number, because the mean of its divisors is an integer number (2069409).

Almost surely, 2^4138817 is an apocalyptic number.

It is an amenable number.

4138817 is a deficient number, since it is larger than the sum of its proper divisors (1).

4138817 is an equidigital number, since it uses as much as digits as its factorization.

4138817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 32.

The square root of 4138817 is about 2034.4082677771. The cubic root of 4138817 is about 160.5555815947. Note that the first 4 decimals are identical.

The spelling of 4138817 in words is "four million, one hundred thirty-eight thousand, eight hundred seventeen".