6935409 has 16 divisors (see below), whose sum is σ = 11065600. Its totient is φ = 4267728.

The previous prime is 6935407. The next prime is 6935429. The reversal of 6935409 is 9045396.

It is not a de Polignac number, because 6935409 - 2¹ = 6935407 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6935407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9529 + ... + 10230.

It is an arithmetic number, because the mean of its divisors is an integer number (691600).

Almost surely, 2^6935409 is an apocalyptic number.

It is an amenable number.

6935409 is a deficient number, since it is larger than the sum of its proper divisors (4130191).

6935409 is a wasteful number, since it uses less digits than its factorization.

6935409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19781 (or 19775 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 6935409 is about 2633.5164704250. The cubic root of 6935409 is about 190.7029271645.

The spelling of 6935409 in words is "six million, nine hundred thirty-five thousand, four hundred nine".