38668417 has 2 divisors, whose sum is σ = 38668418. Its totient is φ = 38668416.

The previous prime is 38668393. The next prime is 38668433. The reversal of 38668417 is 71486683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37748736 + 919681 = 6144^2 + 959^2 .

It is a cyclic number.

It is not a de Polignac number, because 38668417 - 2¹⁹ = 38144129 is a prime.

It is not a weakly prime, because it can be changed into another prime (38668457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19334208 + 19334209.

It is an arithmetic number, because the mean of its divisors is an integer number (19334209).

Almost surely, 2^38668417 is an apocalyptic number.

It is an amenable number.

38668417 is a deficient number, since it is larger than the sum of its proper divisors (1).

38668417 is an equidigital number, since it uses as much as digits as its factorization.

38668417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 38668417 is about 6218.3934420395. The cubic root of 38668417 is about 338.1573237947.

The spelling of 38668417 in words is "thirty-eight million, six hundred sixty-eight thousand, four hundred seventeen".