6779484421 has 4 divisors (see below), whose sum is σ = 6803959372. Its totient is φ = 6755009472.

The previous prime is 6779484343. The next prime is 6779484443. The reversal of 6779484421 is 1244849776.

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

It can be written as a sum of positive squares in 2 ways, for example, as 364275396 + 6415209025 = 19086^2 + 80095^2 .

It is a cyclic number.

It is not a de Polignac number, because 6779484421 - 2¹³ = 6779476229 is a prime.

It is a super-2 number, since 2×6779484421² = 91922818029163410482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779482421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12237060 + ... + 12237613.

It is an arithmetic number, because the mean of its divisors is an integer number (1700989843).

Almost surely, 2^6779484421 is an apocalyptic number.

It is an amenable number.

6779484421 is a deficient number, since it is larger than the sum of its proper divisors (24474951).

6779484421 is a wasteful number, since it uses less digits than its factorization.

6779484421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24474950.

The product of its digits is 2709504, while the sum is 52.

The square root of 6779484421 is about 82337.6245771033. The cubic root of 6779484421 is about 1892.6292848582.

The spelling of 6779484421 in words is "six billion, seven hundred seventy-nine million, four hundred eighty-four thousand, four hundred twenty-one".