6289921 has 4 divisors (see below), whose sum is σ = 6861744. Its totient is φ = 5718100.

The previous prime is 6289909. The next prime is 6289939. The reversal of 6289921 is 1299826.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6289921 - 2¹¹ = 6287873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6289981) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 285895 + ... + 285916.

It is an arithmetic number, because the mean of its divisors is an integer number (1715436).

Almost surely, 2^6289921 is an apocalyptic number.

It is an amenable number.

6289921 is a deficient number, since it is larger than the sum of its proper divisors (571823).

6289921 is a wasteful number, since it uses less digits than its factorization.

6289921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571822.

The product of its digits is 15552, while the sum is 37.

The square root of 6289921 is about 2507.9714910660. The cubic root of 6289921 is about 184.5929301260.

The spelling of 6289921 in words is "six million, two hundred eighty-nine thousand, nine hundred twenty-one".