6904046421 has 10 divisors (see below), whose sum is σ = 10313452182. Its totient is φ = 4602697560.

The previous prime is 6904046399. The next prime is 6904046441. The reversal of 6904046421 is 1246404096.

6904046421 is a `hidden beast` number, since 6 + 9 + 0 + 4 + 0 + 4 + 642 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6090085521 + 813960900 = 78039^2 + 28530^2 .

It is not a de Polignac number, because 6904046421 - 2²⁶ = 6836937557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6904046441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42617490 + ... + 42617651.

Almost surely, 2^6904046421 is an apocalyptic number.

It is an amenable number.

6904046421 is a deficient number, since it is larger than the sum of its proper divisors (3409405761).

6904046421 is an equidigital number, since it uses as much as digits as its factorization.

6904046421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85235153 (or 85235144 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 6904046421 is about 83090.5916515221. The cubic root of 6904046421 is about 1904.1503384346.

The spelling of 6904046421 in words is "six billion, nine hundred four million, forty-six thousand, four hundred twenty-one".