38780947 has 2 divisors, whose sum is σ = 38780948. Its totient is φ = 38780946.

The previous prime is 38780941. The next prime is 38781011. The reversal of 38780947 is 74908783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38780947 - 2³ = 38780939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38780897 and 38780906.

It is not a weakly prime, because it can be changed into another prime (38780941) 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, 19390473 + 19390474.

It is an arithmetic number, because the mean of its divisors is an integer number (19390474).

Almost surely, 2^38780947 is an apocalyptic number.

38780947 is a deficient number, since it is larger than the sum of its proper divisors (1).

38780947 is an equidigital number, since it uses as much as digits as its factorization.

38780947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 38780947 is about 6227.4350257550. The cubic root of 38780947 is about 338.4850330149.

The spelling of 38780947 in words is "thirty-eight million, seven hundred eighty thousand, nine hundred forty-seven".