38869513 has 2 divisors, whose sum is σ = 38869514. Its totient is φ = 38869512.

The previous prime is 38869489. The next prime is 38869529. The reversal of 38869513 is 31596883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33547264 + 5322249 = 5792^2 + 2307^2 .

It is an emirp because it is prime and its reverse (31596883) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38869513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38869513.

It is not a weakly prime, because it can be changed into another prime (38869013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19434756 + 19434757.

It is an arithmetic number, because the mean of its divisors is an integer number (19434757).

Almost surely, 2^38869513 is an apocalyptic number.

It is an amenable number.

38869513 is a deficient number, since it is larger than the sum of its proper divisors (1).

38869513 is an equidigital number, since it uses as much as digits as its factorization.

38869513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 38869513 is about 6234.5419238305. The cubic root of 38869513 is about 338.7425088779.

The spelling of 38869513 in words is "thirty-eight million, eight hundred sixty-nine thousand, five hundred thirteen".