38939473 has 2 divisors, whose sum is σ = 38939474. Its totient is φ = 38939472.

The previous prime is 38939449. The next prime is 38939477. The reversal of 38939473 is 37493983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35378704 + 3560769 = 5948^2 + 1887^2 .

It is a cyclic number.

It is not a de Polignac number, because 38939473 - 2¹³ = 38931281 is a prime.

It is not a weakly prime, because it can be changed into another prime (38939477) 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, 19469736 + 19469737.

It is an arithmetic number, because the mean of its divisors is an integer number (19469737).

Almost surely, 2^38939473 is an apocalyptic number.

It is an amenable number.

38939473 is a deficient number, since it is larger than the sum of its proper divisors (1).

38939473 is an equidigital number, since it uses as much as digits as its factorization.

38939473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The square root of 38939473 is about 6240.1500783234. The cubic root of 38939473 is about 338.9456176923.

It can be divided in two parts, 3893 and 9473, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 38939473 in words is "thirty-eight million, nine hundred thirty-nine thousand, four hundred seventy-three".