38887657 has 2 divisors, whose sum is σ = 38887658. Its totient is φ = 38887656.

The previous prime is 38887633. The next prime is 38887663. The reversal of 38887657 is 75678883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38638656 + 249001 = 6216^2 + 499^2 .

It is a cyclic number.

It is not a de Polignac number, because 38887657 - 2⁷ = 38887529 is a prime.

It is not a weakly prime, because it can be changed into another prime (38887627) 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, 19443828 + 19443829.

It is an arithmetic number, because the mean of its divisors is an integer number (19443829).

Almost surely, 2^38887657 is an apocalyptic number.

It is an amenable number.

38887657 is a deficient number, since it is larger than the sum of its proper divisors (1).

38887657 is an equidigital number, since it uses as much as digits as its factorization.

38887657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 52.

The square root of 38887657 is about 6235.9968729947. The cubic root of 38887657 is about 338.7952081747.

The spelling of 38887657 in words is "thirty-eight million, eight hundred eighty-seven thousand, six hundred fifty-seven".