6920590309 has 2 divisors, whose sum is σ = 6920590310. Its totient is φ = 6920590308.

The previous prime is 6920590307. The next prime is 6920590351. The reversal of 6920590309 is 9030950296.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6694839684 + 225750625 = 81822^2 + 15025^2 .

It is a cyclic number.

It is not a de Polignac number, because 6920590309 - 2¹ = 6920590307 is a prime.

Together with 6920590307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6920590307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460295154 + 3460295155.

It is an arithmetic number, because the mean of its divisors is an integer number (3460295155).

Almost surely, 2^6920590309 is an apocalyptic number.

It is an amenable number.

6920590309 is a deficient number, since it is larger than the sum of its proper divisors (1).

6920590309 is an equidigital number, since it uses as much as digits as its factorization.

6920590309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 6920590309 is about 83190.0854008457. The cubic root of 6920590309 is about 1905.6700714093.

The spelling of 6920590309 in words is "six billion, nine hundred twenty million, five hundred ninety thousand, three hundred nine".