6138009 has 6 divisors (see below), whose sum is σ = 8866026. Its totient is φ = 4092000.

The previous prime is 6137993. The next prime is 6138019. The reversal of 6138009 is 9008316.

It can be written as a sum of positive squares in only one way, i.e., 6110784 + 27225 = 2472^2 + 165^2 .

It is not a de Polignac number, because 6138009 - 2⁴ = 6137993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6138019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340992 + ... + 341009.

It is an arithmetic number, because the mean of its divisors is an integer number (1477671).

Almost surely, 2^6138009 is an apocalyptic number.

It is an amenable number.

6138009 is a deficient number, since it is larger than the sum of its proper divisors (2728017).

6138009 is a wasteful number, since it uses less digits than its factorization.

6138009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682007 (or 682004 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 6138009 is about 2477.5005549949. The cubic root of 6138009 is about 183.0947283458.

The spelling of 6138009 in words is "six million, one hundred thirty-eight thousand, nine".