38966489 has 2 divisors, whose sum is σ = 38966490. Its totient is φ = 38966488.

The previous prime is 38966479. The next prime is 38966503. The reversal of 38966489 is 98466983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31584400 + 7382089 = 5620^2 + 2717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38966489 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38966489.

It is not a weakly prime, because it can be changed into another prime (38966419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19483244 + 19483245.

It is an arithmetic number, because the mean of its divisors is an integer number (19483245).

Almost surely, 2^38966489 is an apocalyptic number.

It is an amenable number.

38966489 is a deficient number, since it is larger than the sum of its proper divisors (1).

38966489 is an equidigital number, since it uses as much as digits as its factorization.

38966489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 53.

The square root of 38966489 is about 6242.3143945175. The cubic root of 38966489 is about 339.0239857957.

The spelling of 38966489 in words is "thirty-eight million, nine hundred sixty-six thousand, four hundred eighty-nine".