6405946446 has 8 divisors (see below), whose sum is σ = 12811892904. Its totient is φ = 2135315480.

The previous prime is 6405946433. The next prime is 6405946489. The reversal of 6405946446 is 6446495046.

It is a sphenic number, since it is the product of 3 distinct primes.

6405946446 is an admirable number.

It is a super-2 number, since 2×6405946446² = 82072299738040061832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6405946395 and 6405946404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533828865 + ... + 533828876.

It is an arithmetic number, because the mean of its divisors is an integer number (1601486613).

Almost surely, 2^6405946446 is an apocalyptic number.

6405946446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6405946446 is a wasteful number, since it uses less digits than its factorization.

6405946446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067657746.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The square root of 6405946446 is about 80037.1566586420. The cubic root of 6405946446 is about 1857.2103753920.

The spelling of 6405946446 in words is "six billion, four hundred five million, nine hundred forty-six thousand, four hundred forty-six".