38500009 has 4 divisors (see below), whose sum is σ = 39074704. Its totient is φ = 37925316.

The previous prime is 38500001. The next prime is 38500039. The reversal of 38500009 is 90000583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38500009 - 2³ = 38500001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38500001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287247 + ... + 287380.

It is an arithmetic number, because the mean of its divisors is an integer number (9768676).

Almost surely, 2^38500009 is an apocalyptic number.

It is an amenable number.

38500009 is a deficient number, since it is larger than the sum of its proper divisors (574695).

38500009 is an equidigital number, since it uses as much as digits as its factorization.

38500009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574694.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 38500009 is about 6204.8375482361. The cubic root of 38500009 is about 337.6656971463.

The spelling of 38500009 in words is "thirty-eight million, five hundred thousand, nine".