38663009 has 18 divisors (see below), whose sum is σ = 49443282. Its totient is φ = 30122400.

The previous prime is 38662997. The next prime is 38663011. The reversal of 38663009 is 90036683.

It can be written as a sum of positive squares in only one way, i.e., 37945600 + 717409 = 6160^2 + 847^2 .

It is not a de Polignac number, because 38663009 - 2⁸ = 38662753 is a 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 38663009.

It is not an unprimeable number, because it can be changed into a prime (38663029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2669 + ... + 9189.

It is an arithmetic number, because the mean of its divisors is an integer number (2746849).

Almost surely, 2^38663009 is an apocalyptic number.

It is an amenable number.

38663009 is a deficient number, since it is larger than the sum of its proper divisors (10780273).

38663009 is a wasteful number, since it uses less digits than its factorization.

38663009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6557 (or 6539 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 38663009 is about 6217.9585878325. The cubic root of 38663009 is about 338.1415586457.

The spelling of 38663009 in words is "thirty-eight million, six hundred sixty-three thousand, nine".