6442450905 has 32 divisors (see below), whose sum is σ = 11278470528. Its totient is φ = 3114316800.

The previous prime is 6442450879. The next prime is 6442450919. The reversal of 6442450905 is 5090542446.

It is a happy number.

It is not a de Polignac number, because 6442450905 - 2⁵ = 6442450873 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2326 + ... + 113535.

It is an arithmetic number, because the mean of its divisors is an integer number (352452204).

Almost surely, 2^6442450905 is an apocalyptic number.

It is an amenable number.

6442450905 is a deficient number, since it is larger than the sum of its proper divisors (4836019623).

6442450905 is a wasteful number, since it uses less digits than its factorization.

6442450905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116217.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 6442450905 is about 80264.8796485736. The cubic root of 6442450905 is about 1860.7314833054.

The spelling of 6442450905 in words is "six billion, four hundred forty-two million, four hundred fifty thousand, nine hundred five".