38989663 has 2 divisors, whose sum is σ = 38989664. Its totient is φ = 38989662.

The previous prime is 38989651. The next prime is 38989673. The reversal of 38989663 is 36698983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38989663 - 2²⁵ = 5435231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38989663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38989673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19494831 + 19494832.

It is an arithmetic number, because the mean of its divisors is an integer number (19494832).

Almost surely, 2^38989663 is an apocalyptic number.

38989663 is a deficient number, since it is larger than the sum of its proper divisors (1).

38989663 is an equidigital number, since it uses as much as digits as its factorization.

38989663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 52.

The square root of 38989663 is about 6244.1703211876. The cubic root of 38989663 is about 339.0911801559.

The spelling of 38989663 in words is "thirty-eight million, nine hundred eighty-nine thousand, six hundred sixty-three".