38347979 has 2 divisors, whose sum is σ = 38347980. Its totient is φ = 38347978.

The previous prime is 38347973. The next prime is 38347993. The reversal of 38347979 is 97974383.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38347979 - 2⁴ = 38347963 is a prime.

It is not a weakly prime, because it can be changed into another prime (38347973) 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, 19173989 + 19173990.

It is an arithmetic number, because the mean of its divisors is an integer number (19173990).

Almost surely, 2^38347979 is an apocalyptic number.

38347979 is a deficient number, since it is larger than the sum of its proper divisors (1).

38347979 is an equidigital number, since it uses as much as digits as its factorization.

38347979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The square root of 38347979 is about 6192.5745050019. The cubic root of 38347979 is about 337.2206493192.

The spelling of 38347979 in words is "thirty-eight million, three hundred forty-seven thousand, nine hundred seventy-nine".