38666423 has 2 divisors, whose sum is σ = 38666424. Its totient is φ = 38666422.

The previous prime is 38666401. The next prime is 38666429. The reversal of 38666423 is 32466683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38666423 - 2⁶ = 38666359 is a prime.

It is a super-2 number, since 2×38666423² = 2990184535229858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38666429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19333211 + 19333212.

It is an arithmetic number, because the mean of its divisors is an integer number (19333212).

Almost surely, 2^38666423 is an apocalyptic number.

38666423 is a deficient number, since it is larger than the sum of its proper divisors (1).

38666423 is an equidigital number, since it uses as much as digits as its factorization.

38666423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 38.

The square root of 38666423 is about 6218.2331091718. The cubic root of 38666423 is about 338.1515111502.

The spelling of 38666423 in words is "thirty-eight million, six hundred sixty-six thousand, four hundred twenty-three".