38473909 has 2 divisors, whose sum is σ = 38473910. Its totient is φ = 38473908.

The previous prime is 38473889. The next prime is 38473921. The reversal of 38473909 is 90937483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26811684 + 11662225 = 5178^2 + 3415^2 .

It is a cyclic number.

It is not a de Polignac number, because 38473909 - 2¹¹ = 38471861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38473979) 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, 19236954 + 19236955.

It is an arithmetic number, because the mean of its divisors is an integer number (19236955).

Almost surely, 2^38473909 is an apocalyptic number.

It is an amenable number.

38473909 is a deficient number, since it is larger than the sum of its proper divisors (1).

38473909 is an equidigital number, since it uses as much as digits as its factorization.

38473909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 38473909 is about 6202.7339939739. The cubic root of 38473909 is about 337.5893762380.

The spelling of 38473909 in words is "thirty-eight million, four hundred seventy-three thousand, nine hundred nine".