38945017 has 2 divisors, whose sum is σ = 38945018. Its totient is φ = 38945016.

The previous prime is 38944993. The next prime is 38945029. The reversal of 38945017 is 71054983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19900521 + 19044496 = 4461^2 + 4364^2 .

It is an emirp because it is prime and its reverse (71054983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38945017 is a prime.

It is a super-3 number, since 3×38945017³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (38942017) 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, 19472508 + 19472509.

It is an arithmetic number, because the mean of its divisors is an integer number (19472509).

Almost surely, 2^38945017 is an apocalyptic number.

It is an amenable number.

38945017 is a deficient number, since it is larger than the sum of its proper divisors (1).

38945017 is an equidigital number, since it uses as much as digits as its factorization.

38945017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 38945017 is about 6240.5942825984. The cubic root of 38945017 is about 338.9617027014.

It can be divided in two parts, 3894 and 5017, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 38945017 in words is "thirty-eight million, nine hundred forty-five thousand, seventeen".