6482279921 has 4 divisors (see below), whose sum is σ = 6980916852. Its totient is φ = 5983642992.

The previous prime is 6482279891. The next prime is 6482279927. The reversal of 6482279921 is 1299722846.

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 516880225 + 5965399696 = 22735^2 + 77236^2 .

It is a cyclic number.

It is not a de Polignac number, because 6482279921 - 2⁶ = 6482279857 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6482279921.

It is not an unprimeable number, because it can be changed into a prime (6482279927) 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, 249318446 + ... + 249318471.

It is an arithmetic number, because the mean of its divisors is an integer number (1745229213).

Almost surely, 2^6482279921 is an apocalyptic number.

It is an amenable number.

6482279921 is a deficient number, since it is larger than the sum of its proper divisors (498636931).

6482279921 is a wasteful number, since it uses less digits than its factorization.

6482279921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498636930.

The product of its digits is 870912, while the sum is 50.

The square root of 6482279921 is about 80512.6072177519. The cubic root of 6482279921 is about 1864.5581274601.

The spelling of 6482279921 in words is "six billion, four hundred eighty-two million, two hundred seventy-nine thousand, nine hundred twenty-one".