6779438 has 4 divisors (see below), whose sum is σ = 10169160. Its totient is φ = 3389718.

The previous prime is 6779393. The next prime is 6779441. The reversal of 6779438 is 8349776.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1694858 + ... + 1694861.

It is an arithmetic number, because the mean of its divisors is an integer number (2542290).

Almost surely, 2^6779438 is an apocalyptic number.

6779438 is a deficient number, since it is larger than the sum of its proper divisors (3389722).

6779438 is a wasteful number, since it uses less digits than its factorization.

6779438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389721.

The product of its digits is 254016, while the sum is 44.

The square root of 6779438 is about 2603.7353936220. The cubic root of 6779438 is about 189.2624965063.

The spelling of 6779438 in words is "six million, seven hundred seventy-nine thousand, four hundred thirty-eight".