6394477 has 2 divisors, whose sum is σ = 6394478. Its totient is φ = 6394476.

The previous prime is 6394459. The next prime is 6394481. The reversal of 6394477 is 7744936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4791721 + 1602756 = 2189^2 + 1266^2 .

It is a cyclic number.

It is not a de Polignac number, because 6394477 - 2¹¹ = 6392429 is a prime.

It is a super-2 number, since 2×6394477² = 81778672207058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6394457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197238 + 3197239.

It is an arithmetic number, because the mean of its divisors is an integer number (3197239).

Almost surely, 2^6394477 is an apocalyptic number.

It is an amenable number.

6394477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6394477 is an equidigital number, since it uses as much as digits as its factorization.

6394477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 40.

The square root of 6394477 is about 2528.7303138136. The cubic root of 6394477 is about 185.6101306927.

The spelling of 6394477 in words is "six million, three hundred ninety-four thousand, four hundred seventy-seven".