38851009 has 2 divisors, whose sum is σ = 38851010. Its totient is φ = 38851008.

The previous prime is 38850989. The next prime is 38851013. The reversal of 38851009 is 90015883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35664784 + 3186225 = 5972^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 38851009 - 2⁷ = 38850881 is a prime.

It is not a weakly prime, because it can be changed into another prime (38851049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19425504 + 19425505.

It is an arithmetic number, because the mean of its divisors is an integer number (19425505).

Almost surely, 2^38851009 is an apocalyptic number.

It is an amenable number.

38851009 is a deficient number, since it is larger than the sum of its proper divisors (1).

38851009 is an equidigital number, since it uses as much as digits as its factorization.

38851009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 38851009 is about 6233.0577568317. The cubic root of 38851009 is about 338.6887470663.

The spelling of 38851009 in words is "thirty-eight million, eight hundred fifty-one thousand, nine".