6909039 has 12 divisors (see below), whose sum is σ = 10413936. Its totient is φ = 4405632.

The previous prime is 6909037. The next prime is 6909041. The reversal of 6909039 is 9309096.

It is an interprime number because it is at equal distance from previous prime (6909037) and next prime (6909041).

It is not a de Polignac number, because 6909039 - 2¹ = 6909037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6908994 and 6909012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6909037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16482 + ... + 16895.

It is an arithmetic number, because the mean of its divisors is an integer number (867828).

Almost surely, 2^6909039 is an apocalyptic number.

6909039 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

6909039 is a deficient number, since it is larger than the sum of its proper divisors (3504897).

6909039 is a wasteful number, since it uses less digits than its factorization.

6909039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33406 (or 33403 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 6909039 is about 2628.5050884486. The cubic root of 6909039 is about 190.4609215727.

Adding to 6909039 its product of nonzero digits (13122), we get a square (6922161 = 2631²).

The spelling of 6909039 in words is "six million, nine hundred nine thousand, thirty-nine".