6890420009 has 12 divisors (see below), whose sum is σ = 7556832432. Its totient is φ = 6230712600.

The previous prime is 6890419997. The next prime is 6890420011. The reversal of 6890420009 is 9000240986.

It is a de Polignac number, because none of the positive numbers 2^k-6890420009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6890428009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3998222 + ... + 3999944.

It is an arithmetic number, because the mean of its divisors is an integer number (629736036).

Almost surely, 2^6890420009 is an apocalyptic number.

It is an amenable number.

6890420009 is a deficient number, since it is larger than the sum of its proper divisors (666412423).

6890420009 is an equidigital number, since it uses as much as digits as its factorization.

6890420009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3668 (or 1945 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 6890420009 is about 83008.5538303132. The cubic root of 6890420009 is about 1902.8967824566.

The spelling of 6890420009 in words is "six billion, eight hundred ninety million, four hundred twenty thousand, nine".