6450839 has 4 divisors (see below), whose sum is σ = 6625224. Its totient is φ = 6276456.

The previous prime is 6450799. The next prime is 6450841. The reversal of 6450839 is 9380546.

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

It is a cyclic number.

It is not a de Polignac number, because 6450839 - 2⁸ = 6450583 is a prime.

It is a super-2 number, since 2×6450839² = 83226647607842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6450799 and 6450808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6450439) 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, 87137 + ... + 87210.

It is an arithmetic number, because the mean of its divisors is an integer number (1656306).

Almost surely, 2^6450839 is an apocalyptic number.

6450839 is a deficient number, since it is larger than the sum of its proper divisors (174385).

6450839 is a wasteful number, since it uses less digits than its factorization.

6450839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174384.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 6450839 is about 2539.8501924326. The cubic root of 6450839 is about 186.1538692844.

The spelling of 6450839 in words is "six million, four hundred fifty thousand, eight hundred thirty-nine".