6930409 has 2 divisors, whose sum is σ = 6930410. Its totient is φ = 6930408.

The previous prime is 6930389. The next prime is 6930431. The reversal of 6930409 is 9040396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6906384 + 24025 = 2628^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 6930409 - 2⁷ = 6930281 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6930499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3465204 + 3465205.

It is an arithmetic number, because the mean of its divisors is an integer number (3465205).

Almost surely, 2^6930409 is an apocalyptic number.

It is an amenable number.

6930409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6930409 is an equidigital number, since it uses as much as digits as its factorization.

6930409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 6930409 is about 2632.5669981978. The cubic root of 6930409 is about 190.6570878170.

The spelling of 6930409 in words is "six million, nine hundred thirty thousand, four hundred nine".