6408444858 has 16 divisors (see below), whose sum is σ = 12864187776. Its totient is φ = 2128265280.

The previous prime is 6408444839. The next prime is 6408444871. The reversal of 6408444858 is 8584448046.

It is a self number, because there is not a number n which added to its sum of digits gives 6408444858.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1968991 + ... + 1972242.

It is an arithmetic number, because the mean of its divisors is an integer number (804011736).

Almost surely, 2^6408444858 is an apocalyptic number.

6408444858 is an abundant number, since it is smaller than the sum of its proper divisors (6455742918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6408444858 is a wasteful number, since it uses less digits than its factorization.

6408444858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941509.

The product of its (nonzero) digits is 3932160, while the sum is 51.

The square root of 6408444858 is about 80052.7629629359. The cubic root of 6408444858 is about 1857.4517903349.

The spelling of 6408444858 in words is "six billion, four hundred eight million, four hundred forty-four thousand, eight hundred fifty-eight".