38809943 has 2 divisors, whose sum is σ = 38809944. Its totient is φ = 38809942.

The previous prime is 38809937. The next prime is 38809961. The reversal of 38809943 is 34990883.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38809943 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38809894 and 38809903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38809543) 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, 19404971 + 19404972.

It is an arithmetic number, because the mean of its divisors is an integer number (19404972).

Almost surely, 2^38809943 is an apocalyptic number.

38809943 is a deficient number, since it is larger than the sum of its proper divisors (1).

38809943 is an equidigital number, since it uses as much as digits as its factorization.

38809943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 38809943 is about 6229.7626760576. The cubic root of 38809943 is about 338.5693722561.

The spelling of 38809943 in words is "thirty-eight million, eight hundred nine thousand, nine hundred forty-three".