38666807 has 2 divisors, whose sum is σ = 38666808. Its totient is φ = 38666806.

The previous prime is 38666783. The next prime is 38666821. The reversal of 38666807 is 70866683.

It is a strong prime.

It is an emirp because it is prime and its reverse (70866683) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38666807 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38662807) 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, 19333403 + 19333404.

It is an arithmetic number, because the mean of its divisors is an integer number (19333404).

Almost surely, 2^38666807 is an apocalyptic number.

38666807 is a deficient number, since it is larger than the sum of its proper divisors (1).

38666807 is an equidigital number, since it uses as much as digits as its factorization.

38666807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 38666807 is about 6218.2639860334. The cubic root of 38666807 is about 338.1526305516.

The spelling of 38666807 in words is "thirty-eight million, six hundred sixty-six thousand, eight hundred seven".