6539039 has 4 divisors (see below), whose sum is σ = 7042056. Its totient is φ = 6036024.

The previous prime is 6539023. The next prime is 6539041. The reversal of 6539039 is 9309356.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6539039 - 2⁴ = 6539023 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539539) 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, 251489 + ... + 251514.

It is an arithmetic number, because the mean of its divisors is an integer number (1760514).

Almost surely, 2^6539039 is an apocalyptic number.

6539039 is a deficient number, since it is larger than the sum of its proper divisors (503017).

6539039 is a wasteful number, since it uses less digits than its factorization.

6539039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503016.

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 6539039 is about 2557.1544732378. The cubic root of 6539039 is about 186.9984366975.

The spelling of 6539039 in words is "six million, five hundred thirty-nine thousand, thirty-nine".