38487509 has 2 divisors, whose sum is σ = 38487510. Its totient is φ = 38487508.

The previous prime is 38487499. The next prime is 38487517. The reversal of 38487509 is 90578483.

38487509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38068900 + 418609 = 6170^2 + 647^2 .

It is an emirp because it is prime and its reverse (90578483) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38487509 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38487509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38487539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19243754 + 19243755.

It is an arithmetic number, because the mean of its divisors is an integer number (19243755).

Almost surely, 2^38487509 is an apocalyptic number.

It is an amenable number.

38487509 is a deficient number, since it is larger than the sum of its proper divisors (1).

38487509 is an equidigital number, since it uses as much as digits as its factorization.

38487509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 38487509 is about 6203.8301878759. The cubic root of 38487509 is about 337.6291492925.

The spelling of 38487509 in words is "thirty-eight million, four hundred eighty-seven thousand, five hundred nine".