406846646 has 16 divisors (see below), whose sum is σ = 621090240. Its totient is φ = 199833480.

The previous prime is 406846633. The next prime is 406846651. The reversal of 406846646 is 646648604.

It is a super-2 number, since 2×406846646² = 331048386722898632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 406846597 and 406846606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46781 + ... + 54791.

It is an arithmetic number, because the mean of its divisors is an integer number (38818140).

Almost surely, 2^406846646 is an apocalyptic number.

406846646 is a deficient number, since it is larger than the sum of its proper divisors (214243594).

406846646 is a wasteful number, since it uses less digits than its factorization.

406846646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8459.

The product of its (nonzero) digits is 663552, while the sum is 44.

The square root of 406846646 is about 20170.4399059614. The cubic root of 406846646 is about 740.9864164485.

The spelling of 406846646 in words is "four hundred six million, eight hundred forty-six thousand, six hundred forty-six".