38542489 has 2 divisors, whose sum is σ = 38542490. Its totient is φ = 38542488.

The previous prime is 38542481. The next prime is 38542523. The reversal of 38542489 is 98424583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33547264 + 4995225 = 5792^2 + 2235^2 .

It is an emirp because it is prime and its reverse (98424583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38542489 - 2³ = 38542481 is a prime.

It is not a weakly prime, because it can be changed into another prime (38542481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19271244 + 19271245.

It is an arithmetic number, because the mean of its divisors is an integer number (19271245).

Almost surely, 2^38542489 is an apocalyptic number.

It is an amenable number.

38542489 is a deficient number, since it is larger than the sum of its proper divisors (1).

38542489 is an equidigital number, since it uses as much as digits as its factorization.

38542489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 43.

The square root of 38542489 is about 6208.2597400560. The cubic root of 38542489 is about 337.7898422811.

The spelling of 38542489 in words is "thirty-eight million, five hundred forty-two thousand, four hundred eighty-nine".