38338987 has 2 divisors, whose sum is σ = 38338988. Its totient is φ = 38338986.

The previous prime is 38338939. The next prime is 38338991. The reversal of 38338987 is 78983383.

It is a strong prime.

It is an emirp because it is prime and its reverse (78983383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38338987 - 2¹¹ = 38336939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38338987.

It is not a weakly prime, because it can be changed into another prime (38338997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19169493 + 19169494.

It is an arithmetic number, because the mean of its divisors is an integer number (19169494).

Almost surely, 2^38338987 is an apocalyptic number.

38338987 is a deficient number, since it is larger than the sum of its proper divisors (1).

38338987 is an equidigital number, since it uses as much as digits as its factorization.

38338987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 38338987 is about 6191.8484316075. The cubic root of 38338987 is about 337.1942896066.

The spelling of 38338987 in words is "thirty-eight million, three hundred thirty-eight thousand, nine hundred eighty-seven".