38988009 has 6 divisors (see below), whose sum is σ = 56316026. Its totient is φ = 25992000.

The previous prime is 38987999. The next prime is 38988011. The reversal of 38988009 is 90088983.

38988009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 31304025 + 7683984 = 5595^2 + 2772^2 .

It is not a de Polignac number, because 38988009 - 2¹⁶ = 38922473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38988409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2165992 + ... + 2166009.

Almost surely, 2^38988009 is an apocalyptic number.

It is an amenable number.

38988009 is a deficient number, since it is larger than the sum of its proper divisors (17328017).

38988009 is a wasteful number, since it uses less digits than its factorization.

38988009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332007 (or 4332004 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 38988009 is about 6244.0378762464. The cubic root of 38988009 is about 339.0863851692.

The spelling of 38988009 in words is "thirty-eight million, nine hundred eighty-eight thousand, nine".